A conducting circular loop of radius $r$ carries a constant current $i$. It is placed in a uniform magnetic field $\overrightarrow B $, such that $\overrightarrow B $ is perpendicular to the plane of the loop. The magnetic force acting on the loop is
IIT 1983, Easy
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(c) Net force on a current carrying closed loop is always zero, if it is placed in an uniform magnetic field.
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