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Magnetic Flux

The total number of magnetic lines of force passing normally through an area placed in a magnetic field is equal to the magnetic flux linked with that area.
Fig. 1
Net flux through the surface
(θ is the angle between area vector and magnetic field vector)
If θ = 0° then φ = BA, If θ = 90° then φ = 0

Unit and dimension

Magnetic flux is a scalar quantity. Its SI unit is weber (wb), CGS unit is Maxwell or Gauss × cm2; (1 wb = 108 Maxwell).
Other units

Tesla × m2 88488.png
= Volt × second

= Ohm × Coulomb
= Henry × Ampere.
Its dimensional formula [φ] = [ML2T –2A–1]

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