In electric motors we find two main parts, one of which is fixed, does not move when it starts, and another that generally rotates around an axis when the motor is turned on. The fixed part consists of copper wires, covered with a transparent material forming two coils. Already in the part fixed to the axis, the copper wires are rolled around the axis. The observation of the movable part of a blender  generac generators motor shows that it also has a metal cylinder formed of small copper plates separated from one another by grooves with the function of electrically insulating one plate from the other.

The electric circuit of the moving part is formed by several pieces of independent copper wire. When the electric motor is put into operation, there is an electric current in the fixed coils and also in the electric circuit fixed to the shaft and in contact with the coals. At that moment, the axis circuit is subjected to a force and it turns it, and another circuit is connected, repeating the previous procedure. The result is the complete rotation of the shaft, peculiar to electric motors.