Question

writetheprinciple of working of an electric motor

Answer 1

as we know that an electric motor have magnet have magnet surrounding the walls of it. when the electricity is passed through the two terminals to the iron rod, copper wrapped to it,it works as electro magnet and when the electro magnet and the magnet repels each other the rod starts turning round

FOR THE CLEARITY IN ANSWER YOU ONCE  DISASSEMBLE THE MOTOR

Answer 2

An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft.