What is the unit of electromotive force (EMF) in electrical systems?

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Multiple Choice

What is the unit of electromotive force (EMF) in electrical systems?

Explanation:
EMF is the energy provided to each unit of electric charge as it moves through a source, so its unit is the volt. One volt equals one joule of energy per coulomb of charge (V = J/C). Practically, the EMF of a battery or generator sets the potential difference it would create between its terminals if no current were flowing, and the volt is the SI unit used to express that potential difference. The other options correspond to different quantities: ampere is current (amount of charge flowing per second), coulomb is a unit of electric charge, and ohm is resistance.

EMF is the energy provided to each unit of electric charge as it moves through a source, so its unit is the volt. One volt equals one joule of energy per coulomb of charge (V = J/C). Practically, the EMF of a battery or generator sets the potential difference it would create between its terminals if no current were flowing, and the volt is the SI unit used to express that potential difference. The other options correspond to different quantities: ampere is current (amount of charge flowing per second), coulomb is a unit of electric charge, and ohm is resistance.

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