A circular loop having wire, 2.0 cm in radius, carries a 3.5 A current in a 0.05 T magnetic field. Determine the maximum torque possible from this current loop if it is permitted to rotate freely? (Maximum torque takes place when the normal oc the loop forms a 90 degree angle with the direction of the magnetic field.)
i) 0.70 N m
ii) 2.2 N m
iii) 7.0 x 10-5 N m
iv) 2.2 x 10-4 N m