This document provides an overview of electrical conductivity and resistance in materials. It explains that good conductors allow electrons to flow easily between atoms, while insulators have a high resistance and impede electron flow. Resistance is measured in ohms and depends on a material's resistivity, length, and cross-sectional area. Conductivity is the inverse of resistivity and relates to how well a material conducts electricity. The document suggests measuring resistance of wires with varying lengths and thicknesses to calculate resistivity and conductivity.
This presentation is an introduction resistors and will help the reader understand how and why these are used when we discuss controlling external devices using the GPIO port of the Raspberry Pi.
Electricity and Electromagnetism (experimental study)Raboon Redar
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.
➣ Electron Drift Velocity
➣➣➣ Charge Velocity and
Velocity of Field Propagation
➣➣➣ The Idea of Electric Potential
Resistance
➣➣➣ Unit of Resistance
➣➣➣ Law of Resistance
➣➣➣ Units of Resistivity
Conductance and
Conductivity
➣➣➣ Temperature Coefficient of
Resistance
➣➣➣ Value of α at Different
Temperatures
➣➣➣ Variation of Resistivity with
Temperature
➣➣➣ Ohm’s Law
➣➣➣ Resistance in Series
➣➣➣ Voltage Divider Rule
➣➣➣ Resistance in Parallel
➣➣➣ Types of Resistors
➣➣➣ Nonlinear Resistors
➣➣➣ Varistor
➣➣➣ Short and Open Circuits
➣➣➣ ‘Shorts’ in a Series Circuit
➣➣➣ ‘Opens’ in Series Circuit
➣➣➣ ‘Open’s in a Parallel Circuit
➣➣➣ ‘Shorts’ in Parallel Circuits
➣➣➣ Division of Current in Parallel
Circuits
➣➣➣ Equivalent Resistance
➣➣➣ Duality Between Series and
Parallel Circuits
➣➣➣ Relative Potential
This presentation is an introduction resistors and will help the reader understand how and why these are used when we discuss controlling external devices using the GPIO port of the Raspberry Pi.
Electricity and Electromagnetism (experimental study)Raboon Redar
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.
➣ Electron Drift Velocity
➣➣➣ Charge Velocity and
Velocity of Field Propagation
➣➣➣ The Idea of Electric Potential
Resistance
➣➣➣ Unit of Resistance
➣➣➣ Law of Resistance
➣➣➣ Units of Resistivity
Conductance and
Conductivity
➣➣➣ Temperature Coefficient of
Resistance
➣➣➣ Value of α at Different
Temperatures
➣➣➣ Variation of Resistivity with
Temperature
➣➣➣ Ohm’s Law
➣➣➣ Resistance in Series
➣➣➣ Voltage Divider Rule
➣➣➣ Resistance in Parallel
➣➣➣ Types of Resistors
➣➣➣ Nonlinear Resistors
➣➣➣ Varistor
➣➣➣ Short and Open Circuits
➣➣➣ ‘Shorts’ in a Series Circuit
➣➣➣ ‘Opens’ in Series Circuit
➣➣➣ ‘Open’s in a Parallel Circuit
➣➣➣ ‘Shorts’ in Parallel Circuits
➣➣➣ Division of Current in Parallel
Circuits
➣➣➣ Equivalent Resistance
➣➣➣ Duality Between Series and
Parallel Circuits
➣➣➣ Relative Potential
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Sustainability has become an increasingly critical topic as the world recognizes the need to protect our planet and its resources for future generations. Sustainability means meeting our current needs without compromising the ability of future generations to meet theirs. It involves long-term planning and consideration of the consequences of our actions. The goal is to create strategies that ensure the long-term viability of People, Planet, and Profit.
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4. How do we measure these characteristics? Resistance is measured in Ohms (Ω) Current is measured in Amperes (A) Voltage is measured in Voltage (V) Ohm’s Law V = I R
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