# 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

(

*Î¸*is the angle between area vector and magnetic field vector)If

*Î¸*= 0Â° then*Ï†*=*BA*, If*Î¸*= 90Â° then*Ï†*= 0# Unit and dimension

Magnetic flux is a scalar quantity. Its SI unit is weber (wb), CGS unit is Maxwell or Gauss Ã— cm

^{2}; (1 wb = 10^{8}Maxwell).**Other units**

Tesla Ã— m

^{2 }

= Volt Ã— second

= Ohm Ã— Coulomb

= Henry Ã— Ampere.

Its dimensional formula [

*Ï†*] = [*ML*^{2}*T*^{â€“2}*A*^{â€“1}]