State the advantages of potentiometer over voltmeter.

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Solution

Potentiometer provides the exact value of potential difference across any two points in a circuit because it never draws any current from the circuit whereas in the case of voltmeter there is always loss of energy due to internal resistance of cell.
Accuracy of potentiometer can be increased by increasing length of potentiometer but same cannot hold for voltmeter.

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Similar questions

State the underlying principle of a potentiometer. Write two factors by which current sensitivity of a potentiometer can be increased. Why is a potentiometer preferred over a voltmeter for measuring the emf of a cell?

Q. Potentiometer performs the same function as a voltmeter.

Q. Write down the principle of potentiometer. Why is it called an ideal voltmeter?

Q. Assertion :A 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.

Statement 1

: A potentiometer is preferred over a voltmeter for the measurement of e.m.f. of a cell.

Statement 2

: A potentiometer is preferred, as it does not draw any current from the cell.

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