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MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

Two identical pieces of metal wires are used to make a circular loop and a square loop. Same current is passed through both the loops, the ratio of magnetic moment associated with the circular loop to that the square loop is

Answer: (C)

Solution

For wire length , the circle has area and the square (side ) has area , so $/

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Question ID VK-080546