Physics, asked by rohitpitti6224, 1 year ago

Why do you prefer potentiometer to compare the emf of a cell?

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Answered by Anonymous
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ȯ The terminal voltage of a cell is the potential difference between its electrodes. A voltmeter cannot be used to measure the emf of a cell because a voltmeter draws some current from the cell. To measure a cell's emf a potentiometer is used since in a potentiometer measurement no current is flowing.

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