A magnet of total magnetic moment 10-2 î A - m2 is placed in a time-varying magnetic field, Bî (coswt) where B = 1 Tesla and w = 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) 0.014 J
