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Science glossary film: Volt (V)

Volt (V)

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The SI unit of electric potential or electromotive force.

The SI unit of electric potential or electromotive force. It's the potential across a conductor with one ohm resistance when one ampere of current flows. If you imagine water circulating round a system instead of electricity, electromotive force is the pressure difference that drives water around the circuit.

It's the potential across a conductor with one ohm resistance when one ampere of current flows. If you imagine water circulating round a system instead of electricity, electromotive force is the pressure difference that drives water around the circuit.

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