alleryStart learning →A 100-turn coil (0.01 m^2, 2 A) has its plane parallel to a 0.5 T field. What is the torque?
A0.5 N m
B2 N m
C0.1 N m
D1 N m
Answer & Solution
Correct answer: D. 1 N m
Plane parallel to B means m is perpendicular to B, so torque = N I A B = 100 x 2 x 0.01 x 0.5 = 1 N m.
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