An approximation for the magnetic field at the edge of a certain C-shaped magnet is Show that this approximation is consistent with Maxwell’s equations in free space.
Find the magnitude and direction of the force on a square loop of current which has sides length b = 10 cm, positioned with its left edge a distance c = 12 cm from the magnet opening, and carrying a current of 2.6 A counterclockwise. Let and a = 30 cm.
If the loop is rotated by an angle 20º about the x axis, how much torque does it experience and it which direction?