The correct answer is:
A. An electric motor
Explanation:
1. An electric motor contains at least one permanent magnet. Permanent magnets are commonly used in electric motors to create a magnetic field necessary for the motor to function efficiently.
2. The permanent magnet in an electric motor helps in converting electrical energy into mechanical energy by interacting with the magnetic field produced by the flow of current in the motor's coils.
3. This interaction between the permanent magnet and the electric current results in the rotation of the motor's shaft, allowing the motor to perform its intended function of converting electrical energy into mechanical motion.
