Keywords

Permanent magnet

A material which is always magnetic

Poles

The place where the magnetic force is strongest north and south (many field lines)

Magnetic field lines

The lines that show the direction of magnetic force- the closer the stronger the force is- arrows go from north to south poles

Induced magnet

A material that becomes a magnet when placed in a magnetic field

Magnetic material

A material that can be attracted to a magnet e.g. iron, steel, cobalt and nickel

Electromagnet

A magnet which works when an electric current flows- a solenoid with an iron core

Solenoid

A coil of wire that can become an electromagnet

Compass

Shows the direction of a magnetic field- used to plot a magnetic field

Current

The conventional current runs from + to -

Magnetic flux density

The strength of the magnet lines per m2 (measured in T)