How to Determine Electric Flow Through a Square Surface Due to a Nearby Charge?

[Est120]

Homework Statement

determine the electric flow through a square surface of side 2l due to a load + Q located at a perpendicular distance l from the center of the plane

I really don't know how to answer this question .i need help guys
Thanks

Homework Equations

The Attempt at a Solution

I ended up with a doble integral ,which i had to evaluate in order to calculate the flow of electric fiele in the whole square

 

[gneill]

Can you share the details of the the work you've done so far? Is there a figure that accompanies the problem that you can upload?

 

[Est120]

this would be the image ,and i tried this:
im new to this kind of things also English is not my principal language

 

[Chandra Prayaga]

You may not need to do an integration for this. Take advantage of the symmetry

 

[Est120]

You may not need to do an integration for this. Take advantage of the symmetry

Should i just apply Gauss law And multiply by 1/6 ?

 

[gneill]

Should i just apply Gauss law And multiply by 1/6 ?

If you can assume that the Y-axis passes through the center of the square so that symmetry is preserved, then yes.

 

[Chandra Prayaga]

The question will be, what is the closed surface on which you are applying Gauss's law, before dividing by 1/6?

 

[Est120]

The question will be, what is the closed surface on which you are applying Gauss's law, before dividing by 1/6?

A cube ,but i don't know if it's as easy as that

 

[gneill]

A cube ,but i don't know if it's as easy as that

Actually, it is as easy as that! (With the assumption described in post #6).

 

[Chandra Prayaga]

I would say, just go ahead and try it.