Final answer:
A stepper motor typically uses a permanent magnet rotor that interacts with the stator to produce stepwise motion.
Step-by-step explanation:
A stepper motor typically uses a permanent magnet rotor. This type of rotor consists of one or more permanent magnets that are fixed to the motor shaft. The stator of the stepper motor, on the other hand, contains coil windings which interact with the magnetic field produced by the rotor, causing the rotor to move in a stepwise manner.