A square-shaped loop with side length l lies on the xy plane with its center at (000) and carries current I around zaxis. External magnetic field is applied in the z-axis. Let y-axis be the pivot, you tilt the loop by angle alpha (draw in which direction you count this angle), what is the torque the loop experiences? Calculate by brute-force using the integral and via dipole approximation.

A square-shaped loop with side length l lies on the xy plane with its center at (000) and carries current I around zaxis. External magnetic field is applied in the z-axis. Let y-axis be the pivot, you tilt the loop by angle alpha (draw in which direction you count this angle), what is the torque the loop experiences? Calculate by brute-force using the integral and via dipole approximation.