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MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

A circular coil of radius 4 cm having 80 turns carries a current of 2 A. It is placed in uniform magnetic field of intensity 0.1 weber/m. The work done to rotate the coil from the equilibrium position by is .

Answer: (A)

Solution

\cos04)^2$×0.1≈0.16

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Question ID VK-078321