Magnetic Effects (C10)

Write the principle of working of an electric motor. Explain the function of the following parts of an electric motor:

  1. Armature
  2. Brushes
  3. Split ring

Answer

Principle of working of electric motor: A coil carrying electric current placed in an external magnetic field experiences a force.

Function of armature: Enhances the power of the motor and induces motion.

Function of brushes: Helps easy transfer of charge between the coil and the external circuit.

Function of split rings: Reverses the direction of current after each half rotation of the coil so that the coil can keep rotating continuously.