A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2?

Question

What is the magnitude of the torque on the loop in N-m?

Answer 1

http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magmom.html