Gauss Law

Electric Flux

Electric Flux refers to the amount of electric field passing through a given area.

  • is the electric field
  • is the surface normal vector

units of flux is in

Electric Flux applies everywhere, whether it is an open or a closed surface. 

For non-uniform fields, we must divide the surface into small pieces .

If we are interested in finding the flux through a closed surface with an enclosed net charge,

This is super important to understand for solving Electric Flux Problems

We have 3 scenarios

  1. Electric Flux
    1. No need for anything, open surface works, standalone concept
  2. Gauss Law for charge -> flux = Q/
    1. Closed surface
  3. Gauss Law with electric field
    1. Closed surface
    2. Gaussian symmetry