A circular solenoid of 100 tightly packed loops has length 10.0 cm, diameter 2.0 cm, and carries 0.50 A of current. (a) What is the magnitude of the magnetic field within solenoid? (b) If the coil is arranged appropriately so that it experiences a nonzero torque in the presence of a uniform external field of 0.030 T, what is the magnitude of the maximum torque on the solenoid?

A circular solenoid of 100 tightly packed loops has length 10.0 cm, diameter 2.0 cm, and carries 0.50 A of current. (a) What is the magnitude of the magnetic field within solenoid? (b) If the coil is arranged appropriately so that it experiences a nonzero torque in the presence of a uniform external field of 0.030 T, what is the magnitude of the maximum torque on the solenoid?