Answer the following questions.

What is the principle of the electric motor?

The electric motor is a device which converts electrical energy into the mechanical energy. It works on the principle that when a rectangular coil is placed in a magnetic field and the current is passed through it, the force acts on a coil (Electromagnetic force) which rotates the coil. Due to the rotation of the coil the shaft associated with the coil also rotates which converts the past electrical energy (electric current) into the mechanical energy(rotation).