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A magnet of moment 2 A m² lies perpendicular to a 0.5 T field. The torque on it is
A1 N m
B4 N m
C0.25 N m
Dzero
Answer & Solution
Correct answer: A. 1 N m
Torque equals m B sin 90 degrees, which is 2 times 0.5, giving 1 N m.
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