What is the primary purpose of an electromagnet?

The primary purpose of an electromagnet is to produce a temporary magnetic field. When an electric current passes through a coil of wire wound around a core (often made of iron), it creates a magnetic field. This field is only present while the current is flowing, making the magnet's effect temporary.

Unlike permanent magnets that maintain a constant magnetic field, electromagnets can be turned on and off and their strength can be adjusted by controlling the current. This property makes them highly useful in various applications, such as in electric motors, transformers, and magnetic locks, where the ability to control the magnetic field is essential.