Torque on a Bar Magnet in a Magnetic Field || Class 12 Physics Notes

Here we will study about the Torque on a Bar Magnet in a Magnetic Field and Important Points related to it. When a bar magnet is placed in a uniform magnetic field the two poles experience a force. The forces are equal in magnitude and opposite in direction and do not have same line of action. They constitute a couple of forces which produces a torque. The torque tries to rotate the magnet so as to align it parallel to direction of field. Net force on bar magnet = $mB \hat{ i }+ mB (-\hat{ i })=...