A galvanometer acting as a voltmeter will have:
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Verified by ExpertsThe correct answer is:
B
To work as voltmeter, the resistance of galvanometer should be high.
A voltmeter indeed is a modified form of a pivoted coil galvanometer. Since, the resistance of coil of galvanometer of its own is low, hence to convert a galvanometer into a voltmeter, its resistance is to be increased. For this an appropriate high resistance is joined in series with the galvanometer as shown in figure.
The value of this resistance to be connected depends on the range of the voltmeter.
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