I'm working on the following problem:(adsbygoogle = window.adsbygoogle || []).push({});

The drawing shows four point charges. The value of q is 2.0 µC, and the distance d is 0.74 m. Find the total potential at the location P. Assume that the potential of a point charge is zero at infinity.

http://www.boomspeed.com/boogiel80/physics19.3.gif [Broken]

I converted my charge to 2.0e^{-6}. I used the formula V= kq / r and came up with values of -2.43e^{4}for each of the parallel charges and the same numbers, only positive, for each of the perpendicular charges. I assumed I was suppose to add all the charges and I got a total of 0 V. However, webassign is saying that is the incorrect answer. Any input would be nice.

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

Dismiss Notice

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: Electric Potential Difference Created by Point Charges

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