Magnetic Force /Electromagnets

MAGNETIC FIELD: distribution of a magnetic force in the region of a magnet.
- Two different magnetic characteristics labelled North and South

- Similar magnetic poles, north and north or south and south REPEL one another with force
- Dissimilar poles, north and south, ATTRACT one another with a force

The law of magnetic forces

TEST COMPASS: a compass used to check for the presence of a magnetic field

FERROMAGNETIC METALS: metals such as iron, nickel, cobalt or mixtures of these three that attract magnets

DOMAIN THEORY: All large magnets are made up of many smaller and rotatable magnets, called dipoles, which can interact with other dipoles close by. If dipoles line up, then a small magnetic domain is produced.

Dipoles: the small and flexable magnets that make up a large magnet

Magnetic domain: the effect produced when dipoles of a magnet line up