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NEET 2000 (AIPMT) · Potentiometer

Potentiometer question from NEET 2000 (AIPMT)

Q89NEET 2000 · AIPMTEasy

Potentiometer

The potentiometer is best for measuring voltage, as

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Answer: (a)

At balance the sensitive galvanometer shows null deflection, so no current is drawn from the source.
The potentiometer therefore measures the true p.d. (emf) accurately.
So the answer is (a).

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