A conducting circular loop of radius r carries a constant current i. It is placed in a uniform ma...

A conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field B⃗, such that B⃗ is perpendicular to the plane of the loop. The magnetic force acting on the loop is
[IIT 1983; BIT 1992; MP PET 1994; MP PMT 1999;
AMU (Engg.) 2000; MP PMT 2012]
(a) ir B⃗
(b) 2 π r B⃗
(c) Zero
(d) π r i B⃗

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