Primary
Magnetic Flux ○◂｜Definition｜1st｜20260122123527-00-⌔
Magnetic flux
In physics, specifically electromagnetism, the magnetic flux through a surface is the surface integral of the normal component of the magnetic field B over that surface. It is usually denoted Φ or Φ. The SI unit of magnetic flux is the weber (Wb; in derived units, volt–seconds or V⋅s), and the CGS unit is the maxwell.1 Magnetic flux is usually measured with a fluxmeter, which contains measuring coils, and it calculates the magnetic flux from the change of voltage on the coils.
Printed 2026-06-28.
(echo:: @ ᯤ)
Link to original Footnotes
Purcell, Edward; Morin, David (2013). Electricity and Magnetism (3rd ed.). New York: Cambridge University Press. p. 278. ISBN 978-1-107-01402-2. ↩
Secondary
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