Bar Magnet class 12

Bar magnet class 12 Bar Magnet A bar magnet is a rectangular piece of magnetic material that has two poles: North Pole (N) South Pole (S) It produces a magnetic field around it, with magnetic field lines emerging from the north pole and entering the south pole. --- Key Properties: Has two poles, never isolated (no monopole exists). Magnetic field lines are closed loops. Like poles repel, unlike poles attract. Has a magnetic dipole moment (M) = m × 2l, where: m = magnetic pole strength l = effective length (distance between poles)