A motor is a device that converts electrical energy into rotational mechanical energy.
Motors work on the principle of electromagnetism. When an electric current is passed through a rectangular coil placed in a magnetic field, a force acts on the coil which makes it rotate continuously. The coil rotates as long as the current is applied to it.
There are four major components of the motor: The stator, rotor, commutator, and the brushes. The stator is the stationary part of the motor which consists of a permanent magnet.
The rotor is the moving part of the motor and is usually the coils winded around the stator. When the current flows through the coil, it interacts with the magnetic field to impart rotational mechanical force.
The commutator acts like a switch that reverses the direction of current in the motor. This is important so that the ends of the coil do not halt the motion because of the attraction or repulsion of the north pole and the south pole.
The brushes of a motor are typically made of graphite and supply electric current between the stator and the rotor. There are two main types of motors: DC motor and AC motor.
DC motors work on direct current such as batteries whereas AC motors work on alternating current cycles.
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