Assignment:
A circular coil with area A and N turn is free to rotate about a diameter that coincides with the x-axis. Current I is circulating in the coil. There is a uniform magnetic field B in the positive y-direction. Calculate the magnitude and direction of torque and the value of the potential energy U, as given in the equation; “U = -µ . B = -µB cos θ” when the coil is oriented as shown in part a through d of figure below.
Provide complete and step by step solution for the question, use formulas.