question_answer

A magnet of total magnetic moment \[{{10}^{-2}}\hat{i}\,A-{{m}^{2}}\] is placed in a time varying magnetic field, where B = 1 Tesia and \[\omega =0.125\] rad/s. The work done for reversing the direction of the magnetic moment at \[t=1\]second, is:

A) 0.01 J

B) 0.007 J

C) 0.028 J

D)  None of these