MHT CET 2026 Physics question
When a resistance of 200 is connected in series with a galvanometer of resistance G, its range is V. To triple its range, a resistance of 2000 is connected in series. The value of G is
Answer: (C)
Solution
A galvanometer with series resistance reads a full-scale voltage , where is the full-scale current. First case: . Second case (range tripled): . Dividing, , so , giving $2G
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