MagnetismMedium
Question
A coil in the shape of equilateral triangle of side 0.02 m is suspended from the vertex such that it is hanging in a vertical plane between the pole-pieces of a permanent magnet producing a horizontal magnetic field of 5 × 10-2 T. When a current of 0.1 A passed through it and the magnetic field is parallel to its plane then couple acting on the coil is :-
Options
A.8.65 × 10-7 N-m
B.6.65 × 10-7 N-m
C.3.35 × 10-7 N-m
D.3.91 × 10-7 N-m
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