Electromagnetic Induction

Electromagnetic induction is a way of generating electricity that is used in generators and dynamos on bicycles to power the lights.

To generate the electricity, a magnet is spun inside a coil of wire. This produces a current.

To increase the amount of current produced we can:

• increase the speed at which the magnet is turning
• use a stronger magnet
• add more turns to the coil
• increase the coil area