Elektromágnesen

Elektromágnesen is a term that refers to an electromagnet. An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of a coil of wire around an iron core. When an electric current is passed through the coil, the iron core becomes magnetized, creating a magnetic field. The strength of the magnetic field can be controlled by adjusting the amount of current flowing through the coil or by changing the number of turns in the coil.

Electromagnets are distinct from permanent magnets, which have a persistent magnetic field without the need for an external power source. The magnetic field of an electromagnet exists only when the electric current is flowing. When the current is turned off, the magnetic field disappears, although the iron core may retain some residual magnetism.

Electromagnets have a wide range of applications due to their controllable nature. They are used in electric motors, generators, loudspeakers, magnetic resonance imaging (MRI) machines, particle accelerators, and in many industrial processes such as lifting heavy objects or sorting magnetic materials. The principle of the electromagnet is fundamental to many modern technologies.