MHT CET 2024 Physics question
The range of voltmeter of resistance 'G' is 'V' volt. The resistance required to be connected in series with it in order to convert it into a voltmeter of range 'nV' volt, will be
Answer: (A)
Solution
Let the full-scale (maximum) current of the instrument be . For range : . To extend the range to a series resistance is needed: . Dividing the two equations gives , so .
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