(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Imagine a square in the xy plane with each side of length a. It has a uniform charger per unit area (σ). The center of that square is at the origin. Determine the electric field at a distance z above the center.

2. Relevant equations

E=k integral{(sigma/r^2) * r * dA}

3. The attempt at a solution

I realize that all components should cancel except for that in the Z direction. I also tried to use the equation above and integrate from -a/2 to a/2. However as I proceeded, I started to get a bit confused with the integral. I am not even sure if I started it correctly, much less the integral. Thanks in advance.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Intermediate E&M. Electric Field above a square

**Physics Forums | Science Articles, Homework Help, Discussion**