ohms law.pptx
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Ohm's law describes the basic relationship between voltage, current, and resistance in electrical circuits. It states that the current through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance of the conductor. The formula is I=V/R, where I is current, V is voltage, and R is resistance. Circuits can have components connected in series, where the same current passes through all components and the total resistance equals the sum of individual resistances, or parallel, where the total current equals the sum of branch currents and the reciprocal of the total resistance equals the sum of the reciprocals of individual resistances.
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Ohms law
Ohm's Law describes the relationship between voltage, current, and resistance in an electrical circuit. Voltage is the "push" of electricity and is measured in volts. Current is the flow of electricity and is measured in amps. Resistance opposes the flow of current and is measured in ohms. Ohm's Law states that current is directly proportional to voltage and inversely proportional to resistance. Using Ohm's Law, the voltage, current, or resistance in a circuit can be calculated if two of the three values are known. Resistors are used to decrease voltage in a circuit and are marked with color bands to indicate their resistance value. Circuits can be connected in series or parallel, and understanding circuit diagrams
ppt Ohm's law
1) Ohm's Law states that the current through a conductor is directly proportional to the voltage applied across it. It is represented by the equation V=IR, where V is the voltage, I is the current, and R is the resistance.
2) In a series circuit, the current is the same through all components as there is only one path for current to flow. The total resistance is the sum of the individual resistances.
3) In a parallel circuit, the voltage is the same across all branches as there are multiple paths for current to flow forming closed loops. The total resistance is lower than any single resistance.
Ohm's Law
1. Ohm's law defines the linear relationship between voltage and current in a circuit, where the resistor's resistance and voltage drop determine the current flow through the resistor.
2. The resistor's current is equal to the voltage divided by the resistance according to the equation I=V/R, where I is current, V is voltage, and R is resistance.
3. Ohm's law can also be used to calculate voltage or resistance when two variables are known, as shown in the equations V=IR and R=V/I.
Presentation on Ohm's Law
This document discusses Ohm's Law and its history. It provides:
1. A summary of Georg Ohm's discovery and definition of the fundamental relationship between voltage, current, and resistance in the early 19th century.
2. An overview of Ohm's experimental setup and the mathematical equation he derived from his experiments, which later became known as Ohm's Law.
3. Some examples of how Ohm's Law is applied in electric circuits and devices like DC power supplies, electric heaters, mobile phone chargers, and alternators.
Ohm's law
Ohm's law describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the current through a conductor between two points is directly proportional to the voltage across the two points, and inversely proportional to the resistance between them. Voltage is the "push" or pressure behind current flow, measured in volts. Current is the quantity of electrical flow through a circuit, measured in amps. Resistance opposes the flow of current and is measured in ohms. Ohm's law can be expressed as formulas to calculate voltage, current, or resistance when two of the three values are known.
Ohm’s law
1. The document discusses Ohm's Law and describes how voltage, current, and resistance are related. It defines key concepts like voltage, current, resistance, direct current, alternating current, series and parallel circuits.
2. Formulas for calculating current, voltage, resistance and power in series and parallel circuits are presented along with examples of using Ohm's Law to solve circuit problems.
3. The document concludes with exercises to test the reader's understanding of concepts covered.
Electric circuits
The document discusses electrical circuits and Ohm's Law. It defines key concepts like voltage, current, resistance and their relationships. Voltage is measured in volts and is the "push" that drives current through a circuit. Current is measured in amps and is the flow of electrons. Resistance opposes the flow of current. Ohm's Law states that current is directly proportional to voltage and inversely proportional to resistance. Circuits can be connected in series or parallel, affecting how current and voltage are distributed.
Current And Voltages
This document provides an introduction to DC circuits, current, voltage, and power. It defines key concepts such as:
- Current is the flow of electrons and is measured in amps.
- Voltage is a force that moves electrons and is measured in volts.
- Power is the rate of energy use and is calculated using voltage, current, and measured in watts.
It also examines the relationships between these concepts and how connecting batteries in series and parallel affects voltage and current in a circuit. Examples of calculations involving amps, volts, watts, and Ohm's Law are provided.
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Ohms law
Ohm's Law describes the relationship between voltage, current, and resistance in an electrical circuit. Voltage is the "push" of electricity and is measured in volts. Current is the flow of electricity and is measured in amps. Resistance opposes the flow of current and is measured in ohms. Ohm's Law states that current is directly proportional to voltage and inversely proportional to resistance. Using Ohm's Law, the voltage, current, or resistance in a circuit can be calculated if two of the three values are known. Resistors are used to decrease voltage in a circuit and are marked with color bands to indicate their resistance value. Circuits can be connected in series or parallel, and understanding circuit diagrams
ppt Ohm's law
1) Ohm's Law states that the current through a conductor is directly proportional to the voltage applied across it. It is represented by the equation V=IR, where V is the voltage, I is the current, and R is the resistance.
2) In a series circuit, the current is the same through all components as there is only one path for current to flow. The total resistance is the sum of the individual resistances.
3) In a parallel circuit, the voltage is the same across all branches as there are multiple paths for current to flow forming closed loops. The total resistance is lower than any single resistance.
Ohm's Law
1. Ohm's law defines the linear relationship between voltage and current in a circuit, where the resistor's resistance and voltage drop determine the current flow through the resistor.
2. The resistor's current is equal to the voltage divided by the resistance according to the equation I=V/R, where I is current, V is voltage, and R is resistance.
3. Ohm's law can also be used to calculate voltage or resistance when two variables are known, as shown in the equations V=IR and R=V/I.
Presentation on Ohm's Law
This document discusses Ohm's Law and its history. It provides:
1. A summary of Georg Ohm's discovery and definition of the fundamental relationship between voltage, current, and resistance in the early 19th century.
2. An overview of Ohm's experimental setup and the mathematical equation he derived from his experiments, which later became known as Ohm's Law.
3. Some examples of how Ohm's Law is applied in electric circuits and devices like DC power supplies, electric heaters, mobile phone chargers, and alternators.
Ohm's law
Ohm's law describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the current through a conductor between two points is directly proportional to the voltage across the two points, and inversely proportional to the resistance between them. Voltage is the "push" or pressure behind current flow, measured in volts. Current is the quantity of electrical flow through a circuit, measured in amps. Resistance opposes the flow of current and is measured in ohms. Ohm's law can be expressed as formulas to calculate voltage, current, or resistance when two of the three values are known.
Ohm’s law
1. The document discusses Ohm's Law and describes how voltage, current, and resistance are related. It defines key concepts like voltage, current, resistance, direct current, alternating current, series and parallel circuits.
2. Formulas for calculating current, voltage, resistance and power in series and parallel circuits are presented along with examples of using Ohm's Law to solve circuit problems.
3. The document concludes with exercises to test the reader's understanding of concepts covered.
Electric circuits
The document discusses electrical circuits and Ohm's Law. It defines key concepts like voltage, current, resistance and their relationships. Voltage is measured in volts and is the "push" that drives current through a circuit. Current is measured in amps and is the flow of electrons. Resistance opposes the flow of current. Ohm's Law states that current is directly proportional to voltage and inversely proportional to resistance. Circuits can be connected in series or parallel, affecting how current and voltage are distributed.
Current And Voltages
This document provides an introduction to DC circuits, current, voltage, and power. It defines key concepts such as:
- Current is the flow of electrons and is measured in amps.
- Voltage is a force that moves electrons and is measured in volts.
- Power is the rate of energy use and is calculated using voltage, current, and measured in watts.
It also examines the relationships between these concepts and how connecting batteries in series and parallel affects voltage and current in a circuit. Examples of calculations involving amps, volts, watts, and Ohm's Law are provided.
CURRENT ELECTRICITY
- Electric current is the flow of electric charge. It is studied in current electricity and owes its origin to Alessandro Volta's invention of the battery, which produced a steady flow of electric current.
- In conductors like metals, loosely bound electrons can move freely and produce electric current when a potential difference is applied across the conductor by a battery. These free electrons drift in the direction of the electric field.
- Current is defined as the rate of flow of electric charge. It is measured in amperes, which is the amount of charge (in coulombs) passing through an area in one second. Current is a scalar quantity while current density is a vector quantity.
OHM’S LAW.pptx
This document discusses Ohm's law, which states that current through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance of the conductor. It defines key electrical concepts like voltage, current, and resistance. It then explains Ohm's law using mathematical formulas and gives examples of how to use it to calculate voltage, current, or resistance given two of the three values. Finally, it outlines hands-on learning activities for students to reinforce their understanding of Ohm's law.
Presentation on electrical resistance
This document discusses electrical resistance. It defines resistance as the opposition to the flow of electrical current and explains that all devices have some resistance. It introduces the resistance equation of Resistance=Voltage/Current (R=V/I) and describes how to calculate voltage, current, or resistance when two values are known. It also describes different types of resistors like fixed resistors, variable resistors, and special resistors such as diodes, thermistors, and light dependent resistors (LDRs), explaining how their resistance changes with factors like temperature, light intensity, or direction of current. It concludes by mentioning Ohm's Law.
Principle of electricity
This document provides an overview of electrical circuits and key concepts like Ohm's Law. It discusses the basics of series and parallel circuits, and how to measure current and voltage. Key points covered include: Ohm's Law states that current is directly proportional to voltage and inversely proportional to resistance. Circuits can be connected in series, where components are in a row, or parallel, where there are multiple paths. Current is measured using an ammeter in series, and voltage is measured using a voltmeter connected across components. The document concludes with a restatement of Ohm's Law and definitions of series and parallel circuits.
Ohms Law
Ohm's law defines the relationship between voltage, current, and resistance in a circuit. It states that current is directly proportional to voltage and inversely proportional to resistance. The amount of current, voltage, or resistance in a circuit can be calculated if two of the three values are known using the equation: I = V/R
Some key points about Ohm's law include:
- Voltage is measured in volts (V), current in amps (A), and resistance in ohms (Ω)
- Ohm's law can be rearranged to solve for any of the three circuit variables
- Examples are provided to demonstrate calculating unknown values given two known values
Electricity and ohm’s law
Electric current is the flow of electrons through a conductive material like metal wires. It is measured in amperes. According to Ohm's law, the current (I) through a conductor is directly proportional to the voltage (V) and inversely proportional to the resistance (R). Ohm's law can be expressed as V=IR, where voltage equals current times resistance. Resistors are electrical components that control current in a circuit by providing resistance according to their material and construction.
current, voltage and resistance
The document discusses key concepts about electricity including:
- Electric current is the flow of charged particles in a circuit. It is measured in amperes.
- Voltage is the electric potential difference between two points in a circuit. It drives the electric current and is measured in volts.
- Resistance opposes the flow of current and is measured in ohms. It varies based on the material's properties.
- Ohm's law states the relationship between current, voltage, and resistance in a circuit. Increased resistance decreases current.
Ohms Law
The document discusses Ohm's law and basic circuit concepts. It defines key terms like current, voltage, resistance, and explains how these relate through Ohm's law. Circuits can be connected in series or parallel, and this affects how current and voltage are distributed. While ideal resistors follow Ohm's law linearly, real components like light bulbs become less linear as they heat up and their resistance changes. Experiments are described to illustrate these concepts using light bulbs and circuits.
Series Circuit
A series circuit is a circuit in which resistors are arranged in a chain, so the current has only one path to take. The current is the same through each resistor.
ELECTRICAL RESISTANCE
Resistance is defined as the ratio of voltage to current in a circuit. Ohm's law states that voltage is directly proportional to current and resistance. The resistance of an object depends on the material it is made of, with insulators having high resistance and conductors having low resistance. Resistance also depends on size and shape, with resistance increasing as length increases or cross-sectional area decreases. Resistance is measured in ohms and resistance can be calculated using the resistance equation.
Electrical resistance
1) Electricity is a form of energy that can be produced from other types of energy like chemical reactions or mechanical rotation. It has advantages like being clean, flexible, efficient, and allowing for easier transmission.
2) An electric circuit consists of a power source, load, switches, and other elements connected by wires. Resistors, rheostats, and resistance boxes in a circuit are made of materials like manganin and constantan.
3) Ohm's law states that the current through a conductor is directly proportional to the potential difference across it, provided the physical conditions stay the same. The resistance of a conductor depends on its length, cross-sectional area, and the material it is
Electrical circuit
1. Current is the flow of electrons through a circuit, measured in amps. Voltage is the electrical pressure that pushes electrons through a circuit, measured in volts. Resistance opposes the flow of electrons and is measured in ohms.
2. Ohm's Law describes the relationship between current, voltage, and resistance in a circuit using the formula E=IR. It can be used to calculate any one variable if the other two are known.
3. Circuits can be connected in series, parallel, or series-parallel configurations which determine how current and voltage are distributed.
RESISTORS IN SERIES AND PARALLEL
Resistors can be connected either in series or in parallel. When resistors are in series, the same current passes through each resistor and the total voltage equals the sum of the individual voltages across each resistor. The equivalent resistance of resistors in series is the sum of the individual resistances. When resistors are in parallel, the total current splits across the resistors and the equivalent resistance is lower than the lowest individual resistance.
5.1 - Potential Difference, Current & Resistance
The document discusses key concepts in electric circuits including potential difference, current, resistance, and Ohm's law. It uses analogies like water flowing in pipes and moped riders delivering pizzas to explain potential difference and current. It defines technical terms such as coulomb, voltage, electromotive force, resistivity, and conventional versus electron flow. Factors that determine resistance like length, cross-sectional area, and material are explored. Simulations are presented to illustrate these concepts in a visual, interactive way.
Thermal Expansion
Thermal expansion is the tendency of matter to change in volume in response to temperature changes. Thermometers use thermal expansion - liquids inside thermometers expand or contract and rise or fall depending on temperature. Other applications include bi-metallic strips in thermometers bending due to differing expansion of the two metals. Rail tracks can buckle due to thermal expansion of long sections. Materials expand when heated as particles move farther apart on average. The coefficient of thermal expansion quantifies a material's expansion relative to temperature change.
Electric Circuits
This document provides an overview of basic electric circuit concepts including:
1) Electric circuits require a closed loop path containing a power source, and a device to use the energy. Voltage is defined as potential difference and current as the rate of charge flow.
2) Ohm's law defines the relationship between voltage, current, and resistance. Circuits can be connected in series or parallel configurations which impacts how voltage and current are distributed.
3) Complex circuits may contain both series and parallel components. To analyze these, each series and parallel section must be solved individually before combining the results.
Lesson 1-electron-theory
The document discusses electricity and the flow of electrons. It defines key terms like electromotive force, molecules, and atoms. An atom is made up of protons, neutrons, and electrons. Electrons carry a negative charge and flow from the negative terminal to the positive terminal when an electric current is applied in a circuit. The attraction between the nucleus and electrons is called the electrostatic force.
Ammeter and voltmeter
Ammeter is a low resistance galvanometer
It is used to measure the current in a circuit in amperes
Galvanometer can be converted into an ammeter by using a low resistance wire in parallel with the galvanometer
the resistance of the wire depends upon the range of the ammeter
As shunt resistance is small the combined resistance of the galvanometer & the shunt is very low hence the ammeter has much lower resistance than galvanometer
An ideal ammeter has zero resistance
It is the most common instrument used to measure voltage
It measure either AC or DC voltage
It is a measure of the voltage between two points of an electrical current
Series and parallel circuits
This document discusses series and parallel circuits. It defines series circuits as those where components are arranged in sequence, with current passing through each component. Parallel circuits have components arranged in branches, with the same voltage applied across each. The key formulas are provided: for series circuits current is the same through each component but voltage adds up, while for parallel circuits voltage is the same across each branch but currents combine. Examples are given applying the formulas to calculate total resistance in series, parallel and combined series-parallel circuits. Measurement devices like multimeters are also introduced.
Electricity ppt
There are two types of charges: positive charges consist of protons, and negative charges consist of electrons. The standard unit of charge is the coulomb. Conductors contain free or loosely bound electrons that allow them to conduct electricity, while insulators do not have free electrons and obstruct electricity flow. Ohm's law defines the relationship between voltage, current, and resistance in a circuit. Joule's law states that the heat produced is directly proportional to the square of the current, the resistance, and the time of current flow. Electric power is defined as voltage multiplied by current and measured in watts.
Halderman ch041 lecture
This document discusses series, parallel, and series-parallel circuits. It begins by defining the objectives and characteristics of each type of circuit. Key points include:
- In a series circuit, current flows through all components in a single path and total resistance equals the sum of individual resistances.
- Kirchhoff's laws state that the total voltage around any closed circuit equals the sum of the voltage drops, and the current entering a junction equals the current leaving.
- Parallel circuits have multiple current paths and the same voltage across each branch, while current varies depending on resistance. Total resistance is less than the smallest individual resistance.
Physices lab ohm's law
This lab experiment aims to verify Ohm's law by measuring resistance in series and parallel circuits. Resistors R1 and R2 are connected in different circuits and the current and voltage are measured. The resistance is calculated from Ohm's law and by finding the slope of the I-V graph. The measured resistances are then compared to theoretical values to see if they satisfy Ohm's law for series and parallel circuits. A report is made with the data sheet, graphs, discussion and percentage error calculation.
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CURRENT ELECTRICITY
- Electric current is the flow of electric charge. It is studied in current electricity and owes its origin to Alessandro Volta's invention of the battery, which produced a steady flow of electric current.
- In conductors like metals, loosely bound electrons can move freely and produce electric current when a potential difference is applied across the conductor by a battery. These free electrons drift in the direction of the electric field.
- Current is defined as the rate of flow of electric charge. It is measured in amperes, which is the amount of charge (in coulombs) passing through an area in one second. Current is a scalar quantity while current density is a vector quantity.
OHM’S LAW.pptx
This document discusses Ohm's law, which states that current through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance of the conductor. It defines key electrical concepts like voltage, current, and resistance. It then explains Ohm's law using mathematical formulas and gives examples of how to use it to calculate voltage, current, or resistance given two of the three values. Finally, it outlines hands-on learning activities for students to reinforce their understanding of Ohm's law.
Presentation on electrical resistance
This document discusses electrical resistance. It defines resistance as the opposition to the flow of electrical current and explains that all devices have some resistance. It introduces the resistance equation of Resistance=Voltage/Current (R=V/I) and describes how to calculate voltage, current, or resistance when two values are known. It also describes different types of resistors like fixed resistors, variable resistors, and special resistors such as diodes, thermistors, and light dependent resistors (LDRs), explaining how their resistance changes with factors like temperature, light intensity, or direction of current. It concludes by mentioning Ohm's Law.
Principle of electricity
This document provides an overview of electrical circuits and key concepts like Ohm's Law. It discusses the basics of series and parallel circuits, and how to measure current and voltage. Key points covered include: Ohm's Law states that current is directly proportional to voltage and inversely proportional to resistance. Circuits can be connected in series, where components are in a row, or parallel, where there are multiple paths. Current is measured using an ammeter in series, and voltage is measured using a voltmeter connected across components. The document concludes with a restatement of Ohm's Law and definitions of series and parallel circuits.
Ohms Law
Ohm's law defines the relationship between voltage, current, and resistance in a circuit. It states that current is directly proportional to voltage and inversely proportional to resistance. The amount of current, voltage, or resistance in a circuit can be calculated if two of the three values are known using the equation: I = V/R
Some key points about Ohm's law include:
- Voltage is measured in volts (V), current in amps (A), and resistance in ohms (Ω)
- Ohm's law can be rearranged to solve for any of the three circuit variables
- Examples are provided to demonstrate calculating unknown values given two known values
Electricity and ohm’s law
Electric current is the flow of electrons through a conductive material like metal wires. It is measured in amperes. According to Ohm's law, the current (I) through a conductor is directly proportional to the voltage (V) and inversely proportional to the resistance (R). Ohm's law can be expressed as V=IR, where voltage equals current times resistance. Resistors are electrical components that control current in a circuit by providing resistance according to their material and construction.
current, voltage and resistance
The document discusses key concepts about electricity including:
- Electric current is the flow of charged particles in a circuit. It is measured in amperes.
- Voltage is the electric potential difference between two points in a circuit. It drives the electric current and is measured in volts.
- Resistance opposes the flow of current and is measured in ohms. It varies based on the material's properties.
- Ohm's law states the relationship between current, voltage, and resistance in a circuit. Increased resistance decreases current.
Ohms Law
The document discusses Ohm's law and basic circuit concepts. It defines key terms like current, voltage, resistance, and explains how these relate through Ohm's law. Circuits can be connected in series or parallel, and this affects how current and voltage are distributed. While ideal resistors follow Ohm's law linearly, real components like light bulbs become less linear as they heat up and their resistance changes. Experiments are described to illustrate these concepts using light bulbs and circuits.
Series Circuit
A series circuit is a circuit in which resistors are arranged in a chain, so the current has only one path to take. The current is the same through each resistor.
ELECTRICAL RESISTANCE
Resistance is defined as the ratio of voltage to current in a circuit. Ohm's law states that voltage is directly proportional to current and resistance. The resistance of an object depends on the material it is made of, with insulators having high resistance and conductors having low resistance. Resistance also depends on size and shape, with resistance increasing as length increases or cross-sectional area decreases. Resistance is measured in ohms and resistance can be calculated using the resistance equation.
Electrical resistance
1) Electricity is a form of energy that can be produced from other types of energy like chemical reactions or mechanical rotation. It has advantages like being clean, flexible, efficient, and allowing for easier transmission.
2) An electric circuit consists of a power source, load, switches, and other elements connected by wires. Resistors, rheostats, and resistance boxes in a circuit are made of materials like manganin and constantan.
3) Ohm's law states that the current through a conductor is directly proportional to the potential difference across it, provided the physical conditions stay the same. The resistance of a conductor depends on its length, cross-sectional area, and the material it is
Electrical circuit
1. Current is the flow of electrons through a circuit, measured in amps. Voltage is the electrical pressure that pushes electrons through a circuit, measured in volts. Resistance opposes the flow of electrons and is measured in ohms.
2. Ohm's Law describes the relationship between current, voltage, and resistance in a circuit using the formula E=IR. It can be used to calculate any one variable if the other two are known.
3. Circuits can be connected in series, parallel, or series-parallel configurations which determine how current and voltage are distributed.
RESISTORS IN SERIES AND PARALLEL
Resistors can be connected either in series or in parallel. When resistors are in series, the same current passes through each resistor and the total voltage equals the sum of the individual voltages across each resistor. The equivalent resistance of resistors in series is the sum of the individual resistances. When resistors are in parallel, the total current splits across the resistors and the equivalent resistance is lower than the lowest individual resistance.
5.1 - Potential Difference, Current & Resistance
The document discusses key concepts in electric circuits including potential difference, current, resistance, and Ohm's law. It uses analogies like water flowing in pipes and moped riders delivering pizzas to explain potential difference and current. It defines technical terms such as coulomb, voltage, electromotive force, resistivity, and conventional versus electron flow. Factors that determine resistance like length, cross-sectional area, and material are explored. Simulations are presented to illustrate these concepts in a visual, interactive way.
Thermal Expansion
Thermal expansion is the tendency of matter to change in volume in response to temperature changes. Thermometers use thermal expansion - liquids inside thermometers expand or contract and rise or fall depending on temperature. Other applications include bi-metallic strips in thermometers bending due to differing expansion of the two metals. Rail tracks can buckle due to thermal expansion of long sections. Materials expand when heated as particles move farther apart on average. The coefficient of thermal expansion quantifies a material's expansion relative to temperature change.
Electric Circuits
This document provides an overview of basic electric circuit concepts including:
1) Electric circuits require a closed loop path containing a power source, and a device to use the energy. Voltage is defined as potential difference and current as the rate of charge flow.
2) Ohm's law defines the relationship between voltage, current, and resistance. Circuits can be connected in series or parallel configurations which impacts how voltage and current are distributed.
3) Complex circuits may contain both series and parallel components. To analyze these, each series and parallel section must be solved individually before combining the results.
Lesson 1-electron-theory
The document discusses electricity and the flow of electrons. It defines key terms like electromotive force, molecules, and atoms. An atom is made up of protons, neutrons, and electrons. Electrons carry a negative charge and flow from the negative terminal to the positive terminal when an electric current is applied in a circuit. The attraction between the nucleus and electrons is called the electrostatic force.
Ammeter and voltmeter
Ammeter is a low resistance galvanometer
It is used to measure the current in a circuit in amperes
Galvanometer can be converted into an ammeter by using a low resistance wire in parallel with the galvanometer
the resistance of the wire depends upon the range of the ammeter
As shunt resistance is small the combined resistance of the galvanometer & the shunt is very low hence the ammeter has much lower resistance than galvanometer
An ideal ammeter has zero resistance
It is the most common instrument used to measure voltage
It measure either AC or DC voltage
It is a measure of the voltage between two points of an electrical current
Series and parallel circuits
This document discusses series and parallel circuits. It defines series circuits as those where components are arranged in sequence, with current passing through each component. Parallel circuits have components arranged in branches, with the same voltage applied across each. The key formulas are provided: for series circuits current is the same through each component but voltage adds up, while for parallel circuits voltage is the same across each branch but currents combine. Examples are given applying the formulas to calculate total resistance in series, parallel and combined series-parallel circuits. Measurement devices like multimeters are also introduced.
Electricity ppt
There are two types of charges: positive charges consist of protons, and negative charges consist of electrons. The standard unit of charge is the coulomb. Conductors contain free or loosely bound electrons that allow them to conduct electricity, while insulators do not have free electrons and obstruct electricity flow. Ohm's law defines the relationship between voltage, current, and resistance in a circuit. Joule's law states that the heat produced is directly proportional to the square of the current, the resistance, and the time of current flow. Electric power is defined as voltage multiplied by current and measured in watts.
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This document discusses series, parallel, and series-parallel circuits. It begins by defining the objectives and characteristics of each type of circuit. Key points include:
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- Kirchhoff's laws state that the total voltage around any closed circuit equals the sum of the voltage drops, and the current entering a junction equals the current leaving.
- Parallel circuits have multiple current paths and the same voltage across each branch, while current varies depending on resistance. Total resistance is less than the smallest individual resistance.
Physices lab ohm's law
This lab experiment aims to verify Ohm's law by measuring resistance in series and parallel circuits. Resistors R1 and R2 are connected in different circuits and the current and voltage are measured. The resistance is calculated from Ohm's law and by finding the slope of the I-V graph. The measured resistances are then compared to theoretical values to see if they satisfy Ohm's law for series and parallel circuits. A report is made with the data sheet, graphs, discussion and percentage error calculation.
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ec ppt
Okay, here are the steps to solve this problem:
1) The circuit consists of two resistors (R1 and R2) in series. So we can find the total resistance (Rt) by adding the individual resistances:
Rt = R1 + R2
= 2 Ω + 3 Ω
= 5 Ω
2) Use Ohm's Law to calculate the current drawn (I) from the battery:
V = I × R
5 V = I × 5 Ω
I = 5 V/5 Ω
= 1 A
Therefore, the current drawn from the 5 volt battery is 1 Ampere (1 A).
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Ohm's Law describes the relationship between resistance, current, and voltage in an electrical circuit. The formula is R (resistance in ohms) = V (voltage in volts) divided by I (current in amperes). Ohm's Law states that the voltage across a conductor is equal to the current through it multiplied by the resistance of the conductor. Understanding Ohm's Law is vital for working with electrical and electronic circuits as it describes how resistance, current, and voltage are interrelated.
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This document discusses series and parallel circuits. It begins by explaining series circuits, noting that the same current flows through every part of the circuit and the total resistance is calculated by adding individual resistances. It then explains parallel circuits, noting multiple current paths and that individual voltages are equal to the supply voltage. The document provides examples of calculating current, resistance, and voltage in series and parallel circuits. It concludes by discussing practical applications of series and parallel circuits in voltmeters and ammeters.
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This document discusses resistors in series and parallel circuits. It defines series and parallel circuits, provides diagrams of each, and derives the formulas for calculating equivalent resistance in series (sum of individual resistances) and parallel (reciprocal of the sum of reciprocals of individual resistances) circuits. It concludes by giving examples of applications of resistors in heating elements, lighting, and automotive components.
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This document provides an overview of key concepts in electric circuits including:
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- Describing DC circuits and stating Ohm's law.
- Explaining series, parallel and combination connections of resistors.
- Describing Faraday's laws of electromagnetic induction and Fleming's right hand rule.
- Explaining the working of single loop AC generators and terms related to AC circuits.
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1) The document is a PowerPoint presentation about electricity created by Dheeraj Kumar Meena for class 10.
2) It covers topics like electric current and circuits, electrical potential and potential difference, Ohm's law, and types of electric circuits.
3) Ohm's law explains the relationship between voltage, current, and resistance and states that at constant temperature, current is directly proportional to potential difference.
ohm's law and circuits
This document discusses Ohm's law and basic circuit concepts. It defines key terms like voltage, current, resistance, power, and energy. It explains that voltage is directly proportional to current based on Ohm's law. Circuits can be connected in series or parallel, and examples show how to calculate current, voltage, resistance, and power in different circuit configurations using Ohm's law.
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You’ll understand the way to calculate and measure resistance in parallel and series circuits by knowing two of the three values of voltage, current, or resistance. In this experiment, there are 3 resistors, 1 power supply and wires you need for connecting resistors to each other, then to power supply. You can measure each resistor by an ohmmeter, voltages by voltmeter and currents by amperemeter (ammeter), while all of them can be measured by a multimeter. Use a multimeter for measuring resistance for better accuracy.
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This document provides an overview of an electrical circuits power point presentation for a B.Tech II semester engineering course. The presentation was prepared by several course instructors and covers topics such as potential difference, basic circuit components, Ohm's law, series and parallel circuits, Kirchhoff's laws, and mesh analysis. It defines key concepts like voltage, current, resistance, and power. Examples are provided to illustrate calculations for series, parallel and compound circuits. Transformation techniques like star-delta are also explained. The goal is to introduce foundational electrical circuit analysis concepts.
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This document discusses electric circuits and Ohm's law. It defines Ohm's law, which states that current is directly proportional to voltage and inversely proportional to resistance. Conductors that obey Ohm's law are called ohmic conductors, and their current-voltage graph will be a straight line. Non-ohmic conductors do not obey Ohm's law, and their resistance changes with temperature. The document also discusses resistors in series and parallel circuits, provides example calculations using Ohm's law and formulas for total resistance, and recommends a PhET simulation for circuit construction.
Combination of Resistors — Series and Parallel | Physics
Electrical current is the flow of charged particles. The flow of charges will be constant in current electricity. Electric current flows from higher electric potential to lower electric potential. For the current to flow, it requires a circuit which is closed loop of a conducting material. Copy the link given below and paste it in new browser window to get more information on Combination of Resistors — Series and Parallel www.askiitians.com/iit-jee-electric-current/combination-of-resistors-series-and-parallel/
Ohmslaw power (002)
This document defines key electrical terms like voltage, current, and resistance. It explains that voltage is measured in volts and is the amount of energy per charge moving electrons. Current is measured in amperes and is the rate of charge flow. Resistance is measured in ohms and is the opposition to current flow. Ohm's Law is introduced, which gives the relationship between voltage, current, and resistance as V=IR. Examples are given to show how to use Ohm's Law to calculate current in different circuit scenarios. The document concludes by providing practice problems for readers to solidify their understanding of these concepts.
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this is only a description and hoe you are going to compute for the series circuit.....and just to info this is our report in our class in science
Series Ckt. and Parallel.ppt
This document discusses series and parallel circuits. In a series circuit, all components are connected one after the other so there is only one path for electron flow. The total resistance is the sum of the individual resistances and the current is the same throughout. In a parallel circuit, each branch provides its own path so the voltage is the same across all branches but currents can differ depending on the branch resistances. The total current is the sum of the branch currents and the total resistance is lower than any single branch resistance.
Parallel circuit
This document provides information about parallel circuits. It defines a parallel circuit as having multiple paths from the power source through various resistors. The key learning objectives are that students will understand what parallel circuits look like, and know the relationships between voltage, current, and resistance in parallel circuits. The document explains that in parallel circuits, voltage is constant across all resistors while current is calculated by adding the individual branch currents. It provides formulas for calculating total resistance, current, and voltage values. Examples are given to demonstrate applying the formulas.
Resistors measurement in series and parallel circuits
This document discusses resistors in series and parallel circuits. It explains that to calculate current or voltage, the total resistance must first be determined. For resistors in series, the total resistance is equal to the sum of the individual resistances. For resistors in parallel, the total resistance is calculated by taking the reciprocal of the sum of the reciprocals of the individual resistances, which is always smaller than any single resistance. Sample problems are provided for calculating total resistance and current in both series and parallel circuits.
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ohms law.pptx
- 2. Ohm’s Law One of the most basic and important laws of electrical circuits is Ohm’s law.Ohms law establishes these relationship between voltage (V) , Current (I) and Resistance (R) Definition:- Ohms states that, the current in a conductor is directly proportional to voltage and inversely proportional to its resistance at constant temperature. Ohm’s law formula I = V / R where I=Current in amperes V=applied voltage in volts R=resistance in ohms Formula variations of ohm’s law 1. I = V/R for finding current 2. R = V/I for finding resistance 3. V= I/R for finding voltage
- 4. Example with solution • eg. If circuit is having 48 Ω resistance and 6V is applied to it, what is the current in that circuit. • here V = 6V & R = 48 Ω • I = V / R = 6 V / 48 Ω = 1 / 8 = .125 A
- 5. Resistance in Series & Parallel • Two or more resistors are said to be connected in series when the same amount of current flows through all the resistors.
- 6. Resistance’s in Series When resistance’s are connected end to end (as shown in figure) They are in series. R V Rn R3 R2 R1 Vn V3 V2 V1 When resistance’s are in series the characteristics are:- Total resistance the circuit equals the sum of individual resistance i.e. total resistance ( R ) = R1 + R2 + R3 + RN ……. Current through all resistance is same. Sum of voltage drops across all individual resistance (IR drop i.e. I x R1, I x R2, I x R3) equals the applied voltage (V = IR1 + IR2 + IR3 + IR n)
- 7. Resistance in Parrallel When two or more resistance are side by side to a single source, they are in parralel as shown in figure. R1 R2 R3 8Ω 12Ω 24Ω 12V + ve _ ve Resistors in Parallel 1/RT = 1/R1 + 1/R2 + 1/R3 + . . .
- 8. In parallel the characteristic:- The reciprocal of net resistance (I/R) equals Sum of reciprocals of individual resistance (1/R1 + 1/R2 + 1/R3) Hence in given example, 1/R = 1/R1 + 1/R2 + 1/R3 = 1/8 + 1/12 + 1/24 = 6/24 R = 24/6 = 4Ω Voltage across each branch is same Total current equals sum of branch currents. In other words the total current is distributed in all breaches as each breach provides path to the current. For the given circuit, total current = Total voltage / Total resistance = (V / R) = 12 V / 4Ω = 3 Amp This 3 Amp current is divided as :- (Hence V is common:-) I in R1 = I (R1) = V / R1 = 12V / 8Ω = 1.50 Amp. = ( 1 ½ A) I in R2 = I (R2) = V / R2 = 12V / 12Ω = 1 Amp. I in R3 = I (R3) = V / R3 = 12V / 24Ω = .5 Amp. Total current = I R1 + IR2 + IR3 = 1.5 + .5 + 1A = 3A
- 9. Various Parallel Resistor Networks
- 10. This much quicker product-over-sum method of calculating two resistor in parallel, either having equal or unequal values is given as:
- 11. Series and Parallel resistance in same circuit In such conditions the problem should be worked out using both methods used for parallel and series circuits. First the equivalent resistance of parallel combinations is calculated and added with the series Work out in given circuit:- R1 R2 R3 8Ω 12Ω 24Ω 24 V + ve _ ve R4 R5 4Ω 4Ω R6 2Ω R7 8Ω