Question

Define electro motive force answer
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Answer 1

Answer:

Electromotive force is the characteristic of any energy source capable of driving electric charge around a circuit. It is abbreviated E in the international metric system but also, popularly, as emf. Electromotive force.

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Answer 2

In electromagnetism and electronics, electromotive force is the electrical action produced by a non-electrical source. Devices provide an emf by converting other forms of energy into electrical energy, such as batteries or generators. Sometimes an analogy to water pressure is used to describe electromotive force. Wikipedia
Formula
E=\frac{W}{Q}
E = electromotive force
W = work done
Q = charge