magnetic flux

American  

noun

Electricity.

1. the total magnetic induction crossing a surface, equal to the integral of the component of magnetic induction perpendicular to the surface over the surface: usually measured in webers or maxwells.

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magnetic flux British  

noun

1.  φ.  a measure of the strength of a magnetic field over a given area perpendicular to it, equal to the product of the area and the magnetic flux density through it

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magnetic flux Scientific  

1. The lines of force associated with a magnetic field. The strength of magnetic flux is equivalent to its magnetic flux density per unit area. The SI unit of magnetic flux is the weber.

2. See magnetic flux density

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Etymology

Origin of magnetic flux

First recorded in 1895–1900

Example Sentences

The breaking of the B-L symmetry produced strings that behave like magnetic flux tubes, while the PQ symmetry created superfluid vortices that carry no magnetic flux.

From Science Daily • Dec. 7, 2025

These 'sneezes,' as the researchers describe them, release the magnetic flux within the protostellar disk, and may be a vital part of star formation.

From Science Daily • Apr. 11, 2024

These magnetic pairs mostly—but not entirely—dissipate as the sunspots decay away, leaving a little leftover magnetic flux of one charge or the other.

From Scientific American • Oct. 20, 2023

They’re also regions from which magnetic flux pours out; those magnetic field lines loop back and reconnect elsewhere on the sun’s surface.

From Washington Post • Jan. 12, 2023

Physically interpreted this quantity signifies the number of lines of magnetic flux due to the current itself which are self-linked with its own circuit.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" by Various