An electric motor is an electromechanical device that converts electric energy into mechanical energy.

          Most electric motors operate through the interaction of magnetic fields and current-carrying conductors to generate force.The reverse process,producing electrical energy from mechanical energy is done by generators such as an alternate or a dynamo.Some electric motors can also be  used as generators,for example,a traction motor on a vehicle may perform both tasks.Electric motors and generators are commonly referred to as electric machines.