Direct electric current of 25 mA is maintained in a circular loop of radius 10 cm and consisting of 100 turns. An external magnetic field, 0.5 T, is directed at an angle of 60 with the plane of the loop. (a) Calculate the magnitude of the torque exerted on the loop by the magnetic field. [1.96 x 102N.m] (b) What is the magnitude of the magnetic moment of the current loop? [7.85 x 102 A.m] (c) How much work must be done to rotate the loop from its present orientation in the magnetic field to the position when its magnetic dipole moment is aligned with the magnetic field? [5.3 x 10 J]