The scale of a galvanometer of resistance 100 Ω contains 25 divisions. It gives a deflection of one division on passing a current of 4×10 -4 A. The resistance in ohms to be added to it so that it may become a voltmeter of range 2.5 volt is:
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The scale of a galvanometer of resistance 100Ω contains 25 divisions. It gives a deflection of one division on passing a current of 4×10−4 amperes. The resistance in ohms to be added to it, so that it may become a voltmeter of range 2.
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