Question

what is emf in physics​

Answer 1

EMF means ::Electromotive force, abbreviated emf (denoted and measured in volts), is the electrical intensity or "pressure" developed by a source of electrical energy such as a batter generator. ... This potential difference can drive an electric current if an external circuit is attached to the terminals

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Answer 2

Emf stands for Electromotive force.

It is the potential difference between the terminals of battery when battery or cell is not in work...