Define the unit of electric work (joule) in relation to the quantity of charge and potential difference.

1 volt = 1 joule per coulomb
It takes 1 joule of work to force a coulomb of charge enough closer to a charge with the same sign to raise its potential 1 volt.
If you allow 1 coulomb of charge to fall to where its potential is 1 volt less, it gives up 1 joule of energy.

Answered by AL2006 | 2024-06-10

The joule is the unit of electric work defined as the work done to move 1 coulomb of charge across a potential difference of 1 volt. This relationship can be mathematically expressed as 1 volt = 1 joule per coulomb. Thus, moving charges through different potentials involves energy transfer measured in joules.
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Answered by AL2006 | 2025-06-12