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GUJCET · Physics · Moving Charges and Magnetism
In the moving coil galvanometer, if number of turns in the coil is doubled, then the current sensitivity ___________ and the voltage sensitivity ___________.
- A remains unchanged, will be doubled
- B will be halved, will be doubled
- C will be doubled, remains unchanged
- D will be halved, remains unchanged
Answer & Solution
Correct Answer
(C) will be doubled, remains unchanged
Step-by-step Solution
Detailed explanation
Current sensitivity \( S_I = \frac{NBA}{k} \) If \( N \to 2N \), then \( S_I' = \frac{(2N)BA}{k} = 2S_I \).
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