1. Electromagnet Creation: The motor's stator (stationary part) contains coils of wire called windings. When an electric current flows through these windings, they generate a magnetic field. This is the electromagnet.
2. Interaction with Rotor: The rotor (rotating part) is typically made of a ferromagnetic material with permanent magnets or windings. The electromagnet in the stator interacts with the magnetic field of the rotor.
3. Rotation: The interaction between the magnetic fields creates a force on the rotor, causing it to rotate. This force is based on the principle of magnetism: opposite poles attract and like poles repel.
4. Commutation: To ensure continuous rotation, the direction of the current in the stator windings is periodically reversed. This is called commutation, and it effectively flips the poles of the electromagnet, keeping the rotor rotating in the same direction.
Key Function: The electromagnet in a motor acts as a dynamically controllable magnetic field that interacts with the rotor to produce the torque required for rotation.
In short: An electromagnet in a motor provides the "push" or "pull" that makes the rotor spin.
