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ELECTRIC MOTORS EVERYWHERE

      A motor mainly contains two components, a permanent magnet and a coil of wire.  We know that when a current is passed through the coil, a magnetic field is created.

 Action:
     Alternating current is passed through the coil in the motor.  The direction of the current alternates frequently and hence the direction of the magnetic field created by the coil also changes.  The permanent magnet attracts or repels the coil according to the direction of the magnetic field.  Since the attraction and repulsion alternately happens, the coil begins to rotate.  This is the simplified explanation of the working of a motor.

     Motor is main part in many house hold electric appliances.  For example:  hair drier, water pump, washing machine, fridge, AC, mixie, grinder, fan, vacuum cleaner and so on.

      So a coil and the electromagnetic force plays the main role in  electrical engineering.

 Reverse action:
    We understand, when alternating current is passed through the coil of the motor, the coil rotates.  Conversely, when the coil is rotated by some force(wind, steam), the motor will generate alternating current in the coil and become generator (Faraday's law).

     Long live the motors.

  

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