a) Why do we prefer a potentiometer to measure the emf of a cell rather than a voltmeter?
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a) Why do we prefer a potentiometer to measure the emf of a cell rather than a voltmeter?

a) Why do we prefer a potentiometer to measure the emf of a cell rather than a voltmeter?
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) Why do we prefer a potentiometer to measure the emf of a cell rather

than a voltmeter?

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potentiometer is preferred over a voltmeter for the measurement of emf of a cell. Reason: A potentiometer is preferred, as it does not drawn any current from the cell

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