What is the component of an electric motor that rotates?

The component of an electric motor that rotates is known as the rotor. The rotor is crucial because it is the part that converts electrical energy into mechanical energy, facilitating the movement and functioning of the motor. When electric current flows through the rotor, it creates a magnetic field that interacts with another magnetic field, typically produced by the stator, resulting in rotational motion.

While the armature can also refer to specific parts in some types of motors, including the rotor in certain contexts, the term "rotor" specifically identifies the rotating component across most electric motor designs. The commutator is a device that works in conjunction with the rotor to switch the direction of current flow and therefore the magnetic field periodically, which helps in maintaining continuous rotation. The stator, on the other hand, remains stationary and provides the magnetic field necessary for the rotor to spin.

Understanding these components helps clarify how electric motors function and emphasizes the role of the rotor in achieving the desired mechanical output.