Magnetic Fields

Review

1. Law of Magnetic Poles
2. Three natural ferromagnetic materials; Iron, Cobalt, Nickel
3. The atoms of these elements are atomic dipoles (ie each atom acts like a small magnets due to electron arrangement/spin

1. A magnetic field points in the direction a small compass would point if placed in the magnetic field

1. Oersted Principle - moving electric charges produce magnetic fields

1. Motor Principle

If a wire (with current) is placed in a magnetic field it will experience a force.