What is terminal potential differnce of a cell? Can its value be greater than the emf of a cell? Explian.
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Terminal potential difference of a cell is defined as the potential difference between the two electrodes of a cell in a closed circuit. The value of terminal potential difference of a cell is less than the emf of a cell, when current is drawn from the cell (i.e., during discahrging of cell). The value of terminal potential difference of a cell becomes greater than the emf of the cell during charging the cell, i.e., wehn the positive electode of the cell is connected to positive terminal of battery charger and nagative electrode of the cell is connected to negative terminal of battery charger.
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