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Question

A conducting circular loop of radius r carries a constant current i . It is placed in uniform magnetic field B, such that B is perpendicular to the plane of loop. The net magnetic force acting on the loop is

A
irB
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B
2πriB
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C
zero
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D
πriB
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Solution

The correct option is C zero
Net force on a current carrying closed loop is always zero, if it is placed in an uniform magetic field.

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