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MHT CET Physics question

PhysicsElectromagnetic InductionMHT CET

An air-cored coil has a self-inductance of 0.1 H. A soft iron core of relative permeability 1000 is introduced inside cored coil and number of turns reduced to th. The value of self-inductance now becomes

Answer: (D)

Solution

, so ; with raised 1000 times and (so ) the

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Question ID VK-082175