Magnetic frame

Electromagnetic induction is the production of an electromotive force across a conductor when it is exposed to a varying magnetic field. In this experiment frame coil generates electric current by rotating in Earth magnetic filed.

Faraday's Law: Any change in the magnetic environment of a coil of wire will cause a voltage to be induced in the coil. No matter how the change is produced, the voltage will be generated. The change could be produced by changing the magnetic field strength, moving a magnet toward or away from the coil, moving the coil into or out of the magnetic field or rotating the coil relative to the magnet.