A Circular Coil (Radius = 0

Multiple Choice

A circular coil (radius = 0.25 m) has 143 turns and is in a uniform magnetic field.If the orientation of the coil is varied through all possible positions,the maximum torque on the coil by magnetic forces is 0.29 N⋅m when the current in the coil is 2.7 mA.What is the magnitude of the magnetic field?

A) 5.47 T
B) 0.304 T
C) 3.83 T
D) 137 T