MHT CET Physics question

Physics Electromagnetic Induction MHT CET

There is a uniform magnetic field directed perpendicular and into the plane of the paper. An irregular shaped conducting loop is slowly changing into a circular loop in the plane of the paper. Then,

(A)current is induced in the loop in the anti-clockwise directionCorrect
(B)current is induced in the loop in the clockwise direction
(C)AC is induced in the loop
(D)no current is induced in the loop

Answer: (A)

Solution

For a given perimeter the circle encloses the maximum area, so the inward flux increases; by Lenz's law the induced current produces an outward

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Question ID VK-082212