A square loop of wire carrying current i is lying in the plane of paper as shown in figure. The magnetic field is present in the region as shown. The loop will tend to rotate
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a
about PQ with KL coming out of the page
b
about PQ with KL going into the page
c
about RS with MK coming out of the page
d
about RS with MK going into the page
answer is A.
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Detailed Solution
See the direction of torque about centre according to fleming's Left hand rule. F→=il→×B→