Explain the principle, construction and working of a DC motor.

Explanation

A motor is an electrical machine which converts electrical energy into mechanical enerry. The principle of working of a DC motor according to Faraday.s laws of electromagnetic induction is that whenever a current carrying conductor is placed in a magnetic field, it experiences a mechanical force.
The various parts of a DC motor are:
Permanent magnets onboth sides of a coil which consists of carbon brush and commutator as shown in

Working of electric motor is primarily dependent upon the interaction between magnetic field and current. The direction of this force is given by Fleming.s left hand rule nad it.s magnitude is givne by F=BIL. Where B = magnetic flux, density, I = current and L=length of the conductor withing the magnetic field.