electromagnet
Sign in to savethumb|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.
AI overview
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.
AI-generated from the Wikipedia summary — may contain errors.
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
via Wikipedia infobox
Article
24 sectionsContents
- History
- Applications of electromagnets
- Simple solenoid
- Physics
- Magnetic core
- Ampere's law
- Force exerted by magnetic field
- Magnetic circuit
- Magnetic field in magnetic circuit
- Closed magnetic circuit
- Force between electromagnets
- Side effects
- Ohmic heating
- Inductive voltage spikes
- Lorentz forces
- Core losses
- High-field electromagnets
- Superconducting electromagnets
- Bitter electromagnets
- Explosively pumped flux compression
- Definition of terms
- See also
- References
- External links
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.
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of copper wire wound into a coil. A current through the wire creates a magnetic field which is concentrated along the center of the coil. The magnetic field disappears when the current is turned off. The wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material such as iron; the magnetic core concentrates the magnetic flux and makes a more powerful magnet.