A 136 turn circular coil of radius 74 cm is placed in the earth's magnetic field 0.54 G, such that its magnetic dipole moment makes an angle 49 with the field as shown in the picture. If the current in the circular coil is 180 A, then calculate the following: (2+1+1=4 marks) a) The magnetic dipole moment of the coil in Am- b) The torque on the current loop measured in Nm = C) The potential energy of the current loop in joules