Asker: Kxxx, 24 years old
That magnet is the one of the electric motor. Every electric motor has a magnet. This creates a magnetic field. When we send a current through a conductor, it also creates a magnetic field. This causes attraction or repulsion of the conductor and the magnet.
In a hair dryer, the shape is chosen in such a way that it creates a rotating movement to turn the fan.
ing Dirk Van Merode