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Q.

A moving coil galvanometer has 48 turns and area of coil is   If the magnetic field is 0.2 T, then to increase the current sensitivity by 25% without changing area (A) and field (B) the number of turns should become

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answer is 3.

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A moving coil galvanometer has 48 turns and area of coil is   If the magnetic field is 0.2 T, then to increase the current sensitivity by 25% without changing area (A) and field (B) the number of turns should become