Question

1- Write Gauss’ Law.

2- Consider an electric field line passing through a closed surface. What is the sign of the flux if:

a) The line passes from inside to outside?

b)The line passes from outside to inside?

Think of a conductor as having both positive and negative mobile charges. Consider a conductor in electrostatic equilibrium – that is, whose charges are stationary.

3- Given that all of the charges are stationary, what must the E-field be at any point inside of the conductor?

Answer 1

Gauss law :

The total number of electric flux out from a closed surface is equal to the one by eo times of the charge present in the closed surfaces

(or)

The total number of electric flux out of a closed surface is equal to the charge enclosed divided by permiviitty

(2)

According to the concept of the electric flux

The electric field lines are lives from positive charge and enter into negative charge

So the line passes from inside to outside means lines lives the closed surface is represented the positive charge

The lines passes from outside to inside means lines enter to the closed surface so it is negative charge

3 ans

Basing on the concept of the electric flux

The stationary charge having electric field inside zero

So the stationary conductor having electric field inside zero