Question

explain the construction, principle working and uses of electric motor.​

Answer 1

Answer:

Electric motor: A motor is a device which converts electrical energy into mechanical energy. Principle of motor : A 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.

Answer 2

Explanation:

construction of a motor

1. armature coil

2. strong field magnet

3. split ring type commutator

4. brushes

5. battery

principles working

1. when current flows through coil, arm AB and CD experience magnetic force

2. on applying Fleming left hand rule, the force acting on arm AB pushes it downwards and arm CD experience force in upward direction

3. at half rotation Q makes contact with brush X and P with brush Y now the current in the coil get reversed and flows along the path DCBA

USE OF electric motor

1. an electromagnetic in place of permanent magnetic

2. large no of turns of the conducting wire in the coil