What are the principles of magnetism?

Answer 1

When a magnet is freely suspended it will come to rest aligned with the north and south magnetic poles of the Earth. The north seeking point of the magnet is called the south pole and the south seeking point of the magnet is called the north pole. If the two magnetic poles are placed near each other a force will exist between them, this force will be either of attraction or repulsion. Like poles repel, unlike poles attract.

A moving magnetic field will induce a current in a wire. Conversely, a moving wire in a magnetic field will have a current induced in it. Also, a wire carrying current will create a magnetic field. Electricity and magnetism are so closely related to each other that it is actually called electromagnetism.

Answer 2

The principles of magnetism include:

1. Like poles repel, while opposite poles attract.
2. The magnetic field lines flow from the north pole to the south pole.
3. A magnetic field is created around a moving electric charge.
4. Magnetism can be induced in a material by placing it in a magnetic field.