OHMS LAW (1).pptx
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This document explains Ohm's law and discusses series and parallel circuits. It defines key concepts like current, voltage, resistance and how they relate in different circuit configurations. For a series circuit, it notes that the current is the same through each component and the total voltage equals the battery voltage. For a parallel circuit, the current splits equally between paths while the voltage is the same everywhere. It poses sample questions about determining voltages and currents in different circuits.
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OHMS LAW.pptx
Ohm's law describes the 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. In a series circuit, the total voltage supplied by the battery is divided equally across each component. In a parallel circuit, the current splits equally across parallel branches while the voltage remains the same throughout the circuit.
OHMS LAW.pptx
Ohm's law describes the 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 analogy is made that current is like water flowing through a hose - increasing the voltage is like opening the tap wider to increase flow, and increasing resistance is like stepping on the hose to decrease flow. A series circuit has resistors arranged in a chain so current has only one path, and the total voltage across all components equals the battery voltage. In a parallel circuit, the current splits across branches but the voltage is the same everywhere.
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Ohm's law describes the 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. In a series circuit, the total voltage supplied by the battery is divided equally across each component. In a parallel circuit, the current splits equally across parallel branches while the voltage remains the same throughout the circuit.
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Parallel Circuits
This document discusses parallel circuits. It defines a parallel circuit as one where current divides into two or more paths before recombining. Each load receives the full voltage, and total current equals the sum of branch currents. It provides the formula for calculating total resistance and conductance in parallel circuits as the inverse of the sum of the inverse of individual resistances. The current divider rule states current through a branch is proportional to the ratio of its resistance to total resistance. Applications include household wiring, computer hardware, lighting systems, and power grids.
ELECTRICITY
- Electrical circuits require a closed loop for current to flow. Current is the flow of electrons through a circuit. Voltage is the "push" that drives current through a circuit. Resistance opposes the flow of current.
- Ohm's Law states that current is directly proportional to voltage and inversely proportional to resistance. It is represented by the equation I=V/R.
- Circuits can be connected in series or parallel. In a series circuit, the same current flows through each component and the total voltage is shared between components. In a parallel circuit, the voltage is the same across each branch but the current splits across multiple paths.
P5 lesson part two
The document outlines a route map for a 12 lesson course on electric circuits. It will cover topics like static electricity, electric charge, circuits, current, resistance, resistors, voltage, power, and electricity generation and distribution. It provides learning objectives and a sample activity for the first lesson which involves drawing a series circuit with batteries, a switch, light bulb, resistor and variable resistor and adding a voltmeter and ammeter.
4.3.b form 4 parallel circuits
1) Electrical components in a parallel circuit provide separate conducting paths for current. Current divides between the paths, but voltage remains equal across all components.
2) The total resistance of a parallel circuit is less than the smallest individual resistance and decreases as more paths are added.
3) Current can be different in each branch of a parallel circuit, while the total current equals the sum of the individual branch currents.
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.
AS Level Physics- Electric circuits
- Electric circuits require a complete loop or path for current to flow from the energy source through a device. Common circuit components include batteries, resistors, and wires.
- Ohm's law defines the relationship between voltage, current, and resistance in a circuit. The potential difference across a resistor determines the current flowing through it.
- Circuits can be connected in series or parallel. Series circuits have the same current flowing through each component, while parallel circuits split the current across multiple paths.
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OHMS LAW (1).pptx
- 2. - Current: The path an electric current follows - Unit for current is amp - An ammeter measures the amount of current flowing past a certain point
- 3. Understanding Ohm’s Law Ohm’s law may be easier to understand with an analogy. Current flowing through a wire is like water flowing through a hose.
- 5. Increasing voltage with a higher- volt battery increases the current. This is like opening the tap wider so more water flows through the hose.
- 6. Increasing resistance reduces the current. This is like stepping on the hose so less water can flow through it.
- 7. Increasing the resistance, decreases the flow of current…
- 9. 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.
- 10. You need to be aware of the following rules to work through the next questions. - Current in a series circuit is the same at all parts in a circuit. In a series circuit, the total, or sum of the voltages across all the components will equal the voltage across the cell/battery. - The total voltage supplied by the cell is 12V. There are three lamps connected in series, so 12/3 = 4V.
- 11. - The parallel circuit splits into each routes; - Example: - This means the current also splits into 3 equal amounts. Therefore, 9/3 = 3Amps - The voltage will be the same everywhere
- 12. Questions: The label on the battery says 6V. If we connected a voltmeter across each lamp, what would the readings be? At lamp 1 - ________V At lamp 2- ________V At lamp 3- ________V
- 13. Questions What type of circuit is this? What voltage will load 1, 2 and 3 have ? What current will Load 1, 2 and 3 have? 9 V L1 L2 L3