alleryStart learning →A dipole of moment 0.5 A m^2 sits at 90 degrees to a 0.4 T field. The torque is
A0.8 N m
B0.1 N m
C0.4 N m
D0.2 N m
Answer & Solution
Correct answer: D. 0.2 N m
tau = m B sin(90) = 0.5 x 0.4 = 0.2 N m.
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