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This video introduces the terms voltage, current and power using light bulb as an example. Voltage, current and power are important parameters in the study of electricity.
Voltage: Voltage is about the potential. Just as how temperature difference causes heat to flow from higher temperature region to lower temperature region, electrical voltage causes current to flow from high potential region to low potential region.
Current: Current is nothing but the rate of flow of electrons. It says about how many electrons flow per unit time across the given region.
Power: Power is work done by the circuit per unit time. It is energy consumed or energy generated per unit time. As the work/energy interaction per unit time involves both rate of flow of electrons and the difference in potential, it is given mathematically by product of current(rate of flow of electrons) and voltage(potential).
Voltage: Voltage is about the potential. Just as how temperature difference causes heat to flow from higher temperature region to lower temperature region, electrical voltage causes current to flow from high potential region to low potential region.
Current: Current is nothing but the rate of flow of electrons. It says about how many electrons flow per unit time across the given region.
Power: Power is work done by the circuit per unit time. It is energy consumed or energy generated per unit time. As the work/energy interaction per unit time involves both rate of flow of electrons and the difference in potential, it is given mathematically by product of current(rate of flow of electrons) and voltage(potential).
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