Physics – 4.1 Simple phenomena of magnetism | e-Consult

Magnetic field lines emerge from the North pole of a bar magnet and enter the South pole. They form closed loops, meaning they continue through the magnet and back to the South pole, forming a continuous field. The direction of the magnetic field at any point around the magnet is tangent to the magnetic field line at that point. The field lines are typically shown as curved arrows, with the arrow pointing in the direction a north-seeking pole would experience a force. The field is strongest near the poles and weakest in the middle. A diagram illustrating this pattern is shown below:

[Image missing: Magnetic field lines around a bar magnet]

The field lines are always shown as originating from the North pole and terminating at the South pole. They never cross each other.