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Electricity from Magnetism. p.736. Electromagnetic Induction. An electric current is induced in a conductor when the conductor moves through a magnetic field. Direct Current. A current consisting of charges that flow in one direction only. Alternating Current.
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Electromagnetic Induction • An electric current is induced in a conductor when the conductor moves through a magnetic field.
Direct Current • A current consisting of charges that flow in one direction only.
Alternating Current • Charges that move back and forth in a circuit as a result of a wire in a magnetic field being moved up and down repeatedly.
Generators • Devices that transform mechanical energy into electrical energy. • Uses motion in a magnetic field to produce an electric current. • Can be AC or DC.
Turbine • A large circular device made up of many blades that spin, generating electrical current.
Transformers • A device that increases or decreases voltage. • Used to transmit electrical energy from generating plants. • Can be used in florescent lights, TVs, and X-ray machines.