Question

What is the principle of an electric motor?

Answer 1

Electrical MotorThe electric motor is a device which converts electrical energy to mechanical energy. There are mainly three types of electric motor. All of these motors work in more or less same principle. Working of electric motor mainly depends upon the interaction of magnetic field with current
Principle:
It is based on the principle that when a current-carrying conductor is placed in a magnetic field, it experiences a mechanical force whose direction is given by Fleming's Left-hand rule and whose magnitude is given by
Force,F = B I l newton
Where B is the magnetic field in weber/m2.
I is the current in amperes and
l is the length of the coil in meter.
The force, current and the magnetic field are all in different directions

Answer 2

To convert electrical energy into mechanical energy.