electric motor

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electric motor Machine that converts electrical energy into mechanical energy. In a simple form of electric motor, an electric current powers a set of electromagnets on a rotor in the magnetic field of a permanent magnet. Magnetic forces between the permanent magnet and the electromagnet cause the rotor to turn. Electric motors are convenient and quiet, and have replaced many other forms of motive power. They may use alternating current (AC) or direct current (DC).

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