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Q.

The net resistance of a voltmeter should be large to ensure that

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a

it does not get overheated

b

it draws excessive current

c

it can measure large potential difference

d

it does not appreciably change the potential difference to be measured

answer is D.

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Detailed Solution

The resistance of voltmeter is too high, so that it draws negligible current from the circuit, hence does not change the potential drop to be measured.
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