Question

A point charge Q is placed in side a closed surface. What is the flux passing through the closed surface?​

Answer 1

Explanation:

It is zero

Gauss law: The electric flux passing through any closed surface is equal to the total charge enclosed by the surface.

Charge is outside the closed surface. The no of flux entering the closed surface is also leaving it. So net flux through the closed surface is zero.

Answer 2

Answer:

A point charge Q is placed in side a closed surface. Q/4€ is the flux passing through the closed surface.

Explanation:

Given:A point charge Q is placed in side a closed surface.

To find: The flux passing through the closed surface.

Solution:

According to Gauss theorem flux passing through a closed surface is Q/€ if the charge enclosed by the surface is Q.

Here the charge is placed at a side of the closed surface.

So the charge is enclosed by 4 identical closed surfaces.

So the flux coming from each of the surfaces = (Q/€) /4= Q/4€ J