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MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

Moving coil galvanometer has 60 turns, a width of coil is 2 cm and a length is 3 cm. It hangs in uniform magnetic field of 50 CGS unit. If the controlling couple, due to the twist in suspension, is 18 dyne then the current flowing through it is :

Answer: (A)

Solution

At balance : in SI, N m, , T, so

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Question ID VK-078375