MHT CET 2022 Physics question
A galvanometer of resistance 'G' can be converted into a voltmeter of range (V) by connecting a resistance 'R' in series with it. The series resistance required to change its range to is
Answer: (D)
Solution
For the original voltmeter of range with full-scale galvanometer current : , so . For the new range with series resistance : , so . Hence
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