A Current of 11 A flows in a coil Has 36 turns and is 25 cm long on each side. The magnetic field is uniform and has a strength of .75 T. If the coil is angled at 37 degrees, what is the torque on the coil, assuming it can pivot on an appropriate axis?

A current of 5 A passing through a coil of 50 turns produces à field of 2x10 4T at the center of the coil. The radius of the coil is

The superconducting magnet of an MRI scanner requires 810 A of current to create a magnetic field of 4.5 T in the center of its solenoid coil with a 0.65 m radius.    If the solenoid is 1.9 m long, how many loops of wire does it have?  N =

A square coil and a rectangular coil are each made from the same length of wire. Each contains a single turn. The long sides of the rectangle are twice as long as the short sides. Find the ratio  T-square / T-rectangle of the maximum torques that these coils experience in the same magnetic field when they contain the same current.