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MHT CET Physics question

PhysicsElectromagnetic InductionMHT CET

A coil having effective area A, is held with its plane normal to a magnetic field of induction B. The magnetic induction is quickly reduced to 25% of its initial value in 2 s. Then e.m.f. induced across the coil will be

Answer: (A)

Solution

, so ;

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Question ID VK-082010