That would be an electric generator. They are also called dynamos. An alternator is a type of generator that makes alternating current.
It's your basic electromagnetic device. Pressing the pickup wheel of the dynamo against a bicycle wheel in motion cause the inner parts of the dynamo to spin. What's spinning is a pair of magnets surrounded by coils. When the magnetic field through a coil changes you get electricity. That electricity can then power a light.
Magnets in a motor
There are many different types of power plant but they all produce electricity the same way: by spinning huge magnets around an iron core inside a device called a turbine.
heater
No device. Because of magnetic shield no magnets can produce any effect on the rotation of the disk in the electricity meter. You better consume less electricity there by your bill will be in your budget.
An electric motor, an electric fan
The electrical device is a transformer.
-A generator or alternator -A Faraday Induction Coil
A pinwheel, fan, or other spinning device, attached to the axle of an electric generator, is stuck up into the wind. As the wind spins the device, the device in turn spins the generator.
The electrical device is a transformer.
A transformer is an electrical device that takes electricity of one voltage and changes it into another voltage.
A: Electricity is not a device but rather a fiscal flow of electrons