BRAINCAKEElectrical Power
Electrical power = potential difference × current.
P = V I
Electrical circuits are used to transfer energy from one place to another. Energy from a cell or other power source is transferred to a component which transfers the energy to another form of energy.
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Key terms in this lesson
- energy
- The capacity of a system to do work.
- power
- The rate at which work is done, or the rate of transfer of energy.
- potential difference
- The work done, or energy transferred, per unit charge as charge moves between two points in a circuit.
More in Electricity
- Resistivity
- Temperature and Number Density
- The Thermistor
- The Light Dependent Resistor
- Electricity in the Home
- Kirchoff's Second Law
- Series Circuits
- Parallel Circuits
All 30 lessons in Electricity · All OCR AS-level Physics topics