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thumb|A simple electromagnet consisting of a coil of wire wrapped around an iron core. A core of ferromagnetic material like iron serves to increase the magnetic field created. The strength of the magnetic field generated is proportional to the amount of current through the winding.

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An electromagnet is a coil of wire wrapped around an iron core that produces a magnetic field when electric current flows through it. The strength of this magnetic field depends on how much current runs through the wire, making electromagnets useful devices whose magnetic power can be controlled by adjusting the electrical input.

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Key facts

Electronic component.name: Electromagnet
Electronic component.image: Electromagnet-with-9V-battery.jpg
Electronic component.caption: Homemade electromagnet with 9V battery
Electronic component.type: Magnet
Electronic component.working_principle: Oersted's law
Electronic component.inventor: William Sturgeon
Electronic component.invention_Year: 1824
Electronic component.symbol: File:Electric-symbol-electromagnet.png

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Wikidata facts

Subclass of: magnet
Has part: magnetic core
Image: Simple electromagnet2.gif

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time of discovery or invention: 1825-00-00
Commons category: Electromagnets
discoverer or inventor: William Sturgeon
Commons gallery: Electromagnet
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4

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