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Meaning of emf of a cell

Short answer

The emf of a cell is the potential difference between its electrodes when no current is drawn; it equals the maximum voltage E(cathode) − E(anode), measured in volts.

What is meant by emf of a cell?

The emf (electromotive force) of a cell is the potential difference between the two electrodes of a galvanic cell when no current is drawn from it (open circuit). It is the maximum voltage the cell can give, and equals E(cathode) − E(anode), measured in volts.

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