Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Electric potential energy

  1. May 6, 2010 #1
    how would you solve this problem?

    A charge q1 = 3.40 nC is placed at the origin. Three identical charges, q2, q3 q4, are placed at the positions (0.100 m, 0 m), (0 m, 0.100 m), and (0.100 m, 0.100 m). What is the potential energy of this configuration of charges?

    should you do answer = 4kq^2/r or something else?
  2. jcsd
  3. May 6, 2010 #2
    take all possible combinations of any two charges and find their potential energues using kQ1 Q2/r and add all the these/
    Last edited: May 6, 2010
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook