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Noun. 1. potential difference-the difference in electrical charge between two points in a circuit expressed in volts. electric potential, potential drop, voltage, potential. electrical phenomenon-a physical phenomenon involving electricity.
Lesson Summary. Electric potential is the level of power behind a flow of electricity, but shouldn't be confused with the electric current itself. We often refer to electric potential as voltage and measure it in volts (V), which is found by dividing work (joules) by charge (coulomb). The larger the voltage, the stronger the 'push' of electricity, operating much like the water pressure in a shower. To unlock this lesson you must be a Study.com Member.