What is Magnetic flux?
{{Electromagnetism|c Topic=[[Magnetostatics]]}} '''Magnetic flux''' is a measure of the [[Magnetic field line|magnetic field lines]] passing through a surface, such as a loop of wire.<ref>{{Citation|title=Induction - An Introduction: Crash Course Physics #34|url=https://www.youtube.com/watch?v=pQp6bmJPU_0&list=PL8dPuuaLjXtN0ge7yDk_UA0ldZJdhwkoV&index=36|language=en|access-date=2024-02-18}}</ref> The magnetic flux through a closed surface such as a sphere is always zero, because the magnetic field lines going into the closed surface are balanced by field lines coming out.<ref>{{Cite web|title=What is magnetic flux? (article)|url=https://www.khanacademy.org/science/physics/magnetic-forces-and-magnetic-fields/magnetic-flux-faradays-law/a/what-is-magnetic-flux|access-date=2024-02-18|website=Khan Academy|language=en}}</ref> It is the alignment of electrons in the atomic shells of [[Ferromagnetism|ferromagnets]] and the “spinning” electrons in [[Electromagnet|electromagnets]], that provides a material with it’s magnetism.<ref>{{Cite web|title=Introduction to Magnetism and Induced Currents|url=https://dept.rpi.edu/phys/ScIT/InformationStorage/faraday/magnetism_a.html|access-date=2024-02-18|website=dept.rpi.edu|archive-date=2024-02-18|archive-url=https://web.archive.org/web/20240218133526/https://dept.rpi.edu/phys/ScIT/InformationStorage/faraday/magnetism_a.html|url-status=dead}}</ref> The [[SI]] [[unit of measurement|unit]] of magnetic flux is the [[Weber (unit)|Weber]] (Wb; in derived units, volt-seconds). The [[Centimetre–gram–second system of units|CGS]] unit is the [[Maxwell (unit)|Maxwell]]. Magnetic flux is sometimes used by electrical engineers designing systems with [[electromagnet|electromagnets]] or designing [[dynamo]]s. Physicists designing [[particle accelerator]]s also calculate magnetic flux. ==Related pages== *[[Magnetic field]] *[[James Clerk Maxwell]] demonstrated that electric and magnetic forces are two complementary aspects of electromagnetism. *[[Maxwell's equations]] describe the behavior of