Whenever you change the strength of a magnetic field, you create an electric field. In a generator, this electric field pushes on the electrons in a wire and creates an electric current. The changing magnetic field can come from a moving magnet (like in a generator) or from an electromagnet with a changing current (like in a transformer). In both cases, the changing magnetic field creates a changing electric field that affects the electrons in a wire close by creating a current.

Automotive Ignition
Eddy Currents
Pedal Generator
Ring Toss
Shaded Pole Motor I
Shaded Pole Motor II
Slow Motion Switch
Stripped Down Motor
Very Slow Electric Oscillations

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