A region surrounding a magnet where a magnetic material will experience a force
The direction of the force is equal to...
The direction of the field that would act on a north pole of a magnet
Magnetic field lines run from North to South (curved)
The magnetic field is the strongest when the lines are closest as it is more dense therefore it is the strongest at the poles.
Steel can be magnetised to produce a permanent magnet
geographical north = magnetic south vice versa
induced magnetism:
when a a magnetic material is introduced into the magnetic field of a permanent magnet they become magnetic. The force exerted on an induced magnet is always an attractive force
The magnetic field around a wire (current)
Can be seen as a series of concentric circles
The field gets weaker as you get further away from the current due to a decreasing magnetic flux density
