Magnetic flux

Gives the total magnetic field passing through a surface, found by integrating the normal component of the magnetic flux density over the surface. It is used in electromagnetism, for example in Faraday's law and inductance calculations.

\Phi = \int_{S} \boldsymbol{B} \cdot \boldsymbol{e}_{n} \, dA

What the symbols mean

magnetic flux (in webers, Wb)
surface over which the flux is taken
magnetic flux density (in teslas, T)
unit normal vector to the surface
infinitesimal element of surface area (in m²)

About this formula

  • FieldPhysics
  • TopicElectromagnetism
  • LevelUniversity
  • Also calledmagnetic flux through a surface, surface integral of magnetic field, flux of magnetic field, magnetic flux formula, flux integral magnetic field
  • SourceWikidata Q177831

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