A 250-Turn rectangular coil of length 2.1 cm and width 1.25 cm carries a current of 85 microA and subjected to a magnetic field of strength 0.85 T.Work done for rotating the coil by 180° against the torque is contexto.120 3 years ago (1) 4.55 micro Joule (2) 2.3 micro Joule (3) 1.15 micro Joule (4) 9.1 micro Joule Solution : Answer (4)