A potentiometer is an ideal device of measuring potential difference because

It uses a sensitive galvanometer

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It is an elaborate arrangement

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It has a long wire hence heat developed is quickly radiated

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It does not disturb the potential difference it measures

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Solution

The correct option is D It does not disturb the potential difference it measures
In balance condition, potentiometer does not take the current from secondary circuit.

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Similar questions

The device used for measuring potential difference is known as:
(a) potentiometer (b) ammeter (c) galvanometer (d) voltmeter

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