A Circular Coil of Wire of 200 Turns and Diameter

Multiple Choice

A circular coil of wire of 200 turns and diameter 2.0 cm carries a current of 4.0 A.It is placed in a magnetic field of with the plane of the coil making an angle of 30° with the magnetic field.What is the magnetic torque on the coil?

A) 0.15 N • m
B) 0.088 N • m
C) 0.29 N • m
D) 0.40 N • m
E) 0.076 N • m