Diagram of an Electric Generator
A generator with a single rectangular coil rotated at constant angular velocity in a uniform magnetic field produces an emf that varies sinusoidally in time. Note the generator is similar to a motor, except the shaft is rotated to produce a current rather than the other way around.
Source
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"OpenStax College, Electric Generators. February 8, 2013."
http://cnx.org/content/m42408/latest/
OpenStax CNX
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