3) A 15 loop circular coil 22 cm in diameter lies in the xy plane (Hint: then what is the direction of A ?). The current in each loop of the coil is 7.6 A clockwise, and an external magnetic field B=(0.55 i + 0.60 j -0.65 k) T passes -> through the coil. Determine (a) the magnetic moment of the coil u; (b) The torque on the coil due to the external magnetic field;

3) A 15 loop circular coil 22 cm in diameter lies in the xy plane (Hint: then what is the direction of A ?). The current in each loop of the coil is 7.6 A clockwise, and an external magnetic field B=(0.55 i + 0.60 j -0.65 k) T passes -> through the coil. Determine (a) the magnetic moment of the coil u; (b) The torque on the coil due to the external magnetic field;