Question

Write the principle of working of an electric motor. Explain the function of Armature.

Answer 1

Answer:

An electric motor works on the principle that when a rectangular coil is placed in a magnetic field and current is passed through it, a force acts on the coil which rotates it continuously. It is based on Fleming's left hand rule. (c ) (i) Armature . It is the rotating part of a motor.

⟹ 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.

Answer 2

• 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.