Electricity is generated when a coil of wire moves in a magnetic field. This is the basis of electricity generators. Most electricity is made in power stations by burning fuels.
The dynamo effect
An electric current is produced when a magnet is moved into a coil of wire in a circuit. The direction of the current is reversed when the magnet is moved out of the coil. It can also be reversed if the other pole of the magnet is moved into the coil.
To increase the induced current:
- move the magnet more quickly