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Question

Write four points of difference between e.m.f. (Electromotive Force) and Potential difference.

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Solution

Differences between e.m.f. and Potential difference:

SL No Electromotive Force (e.m.f.) Potential difference
1 e.m.f. exists after circuit is broken.Does not exist after circuit is broken.
2e.m.f. does not depend on resistance of circuits.Potential difference depends on resistance the between points
3It is greater than terminal voltage of the cell in closed circuit. It is always less than e.m.f. of the cell used.
4It causes the flow of current in a circuit connected to the given cell.It is caused by the flow of current in a circuit.

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