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MHT CET Physics question

PhysicsElectromagnetic InductionMHT CET

A small square loop of wire of side is placed inside a large square loop of wire of side (). The loop are coplanar and their centre coincide. The mutual inductance of the system is proportional to

Answer: (B)

Solution

The field at the common centre due to the large loop is and the flux through the small loop is

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Question ID VK-082118