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How does an electric motor work?
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When an electric current flows along a piece of wire in a magnetic field, the wire moves. In a simple motor, the wire is in the form of a coil placed between the poles of a magnet. The ends of the coil are attached to a pair of split rings called a commutator. Current is fed to the commutator through a pair of carbon brushes. When the wires move in the magnetic field, the coil rotates. | | A simple electric motor is a coil of wire inside a magnet. |
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Previous:
Back
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Book:
1001
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Section:
Science and Technology
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Chapter:
Electricity and Magnetism
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