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MHT CET Physics question

PhysicsElectromagnetic InductionMHT CET

A coil is wound on a frame of rectangular cross-section. If the linear dimensions of the frame are doubled and the number of turns per unit length of the coil remains the same, then the self inductance increases by a factor of

Answer: (C)

Solution

: doubling the linear dimensions makes the area 4 times and the length 2 times,

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Question ID VK-081930