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

Suppose we there is a cube (a x a x a) made up of 8 protons. 1 at each point

What is the Electric Potential Energy

2. Relevant equations

U=q1*q1/4*pi*epsilon_0*r

3. The attempt at a solution

*U12 = Potential Energy to bring 2 to 1*

I'm aware of how to do the question but I'm not sure if I'm expressing it correctly. Remember that the potential energy is the work done configure this system in space.

W1=0

W2=U12

W3=U12+U13

W4=W3+U14

W5=W4+U15

W6=W5+U16

W7=W6+U17

W8=W7+U18

Then the Electric Potential Energy would be = Wtotal = W1+W2 . . . + W8

I am also aware that when I show my equation fully that some of the distances will be sqrt(2a^2)

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

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

# Homework Help: Electric Potential Energy of a Cube of 8 protons

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