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State the uses of a potentiometer. Why i...

State the uses of a potentiometer. Why is a potentiometer preferred over a voltmeter for measuring emf?

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State any one use of a potentiometer.

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Potentiometer is superior to voltmeter because

State the advantages of potentiometer over voltmeter.

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Assertion A potentiometer is preferred over that of a voltmeter for measurement of emf of a cell Reason potentiometer does not draw any current from the cell.