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MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

A moving coil galvanometer has 28 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 and field, the number of turns should be changed to

Answer: (B)

Solution

, so ; 24 would decrease the sensitivity,

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Question ID VK-078664