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MHT CET Physics question

PhysicsElectromagnetic InductionMHT CET

Two coils A and B have 200 and 400 turns, respectively. A current of 1 A in coil A causes a flux per turn of Wb to link with A and a flux per turn of Wb through B. The ratio of mutual inductance of A and B is

Answer: (A)

Solution

Self-inductance of A: H; mutual inductance:

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Question ID VK-082189