A circular coil consists of N = 495 closely winded turns of wire and has a radius R = 0.75 m. A counterclockwise current I = 2.1 A is in the coil. The coil is set in a magnetic field of magnitude B = 1.4 T. The magnetic field points to right.
Express the magnetic dipole moment μ in terms of the number of the turns N, the current I, and radius R.
Which direction does μ go?
If the magnetic field was pointing upward, express the potential energy of the coil in the magnetic field,Uu, in terms of μ and B.
WhatAc€?cs the torque τu now?