Physics Made Simple : Electrostatics : Electric Flux

The Electric Flux:

This is defined as the total number of electric lines of force crossing through the given area.

Gauss"s Law :

This law relates the flux through any closed surface and the net charge enclosed with in the surface.

This law applies to:

1 . Electric field due to an infinite long straight charged wire

2. Electric Field due to an infinite charged plane sheet.

3.Electric field due to two parallel charged sheets.

4. Electric field due to uniformly charged spherical shell.


Electrostatic Shielding :

It is the process of isolating a certain region of space  from an external field.

It is based on the fact that electric field inside a conductor is zero.