The word “flux” comes from the latin word
meaning “to flow”
For a vector field flux is the number of lines
passing through a surface
Mathematically
it is the product of the surface area
“A” and the component of the electric field “E” perpendicular to the
surface
ΦE = EA Nm2 /C
If area “A” is not exactly perpendicular to the
electric field E
ΦE = EAcosf
Flux will be maximum when surface area is perpendicular to the
electric field
ΦE = EA
Gauss's Law
The
total electric flux through any closed surface is proportional to the total
electric charge inside the surface
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