Hi, I am having some trouble with the following problem:(adsbygoogle = window.adsbygoogle || []).push({});

Calculate the electric force on a -3.29microC charge placed on the y axis at y=0.493m.

First I calculated the electric field at y=0.493m using the equation

E= (1/4piEo)*(q/r^2)

and found the electric field at that point to be -1.22E-5.

Then to find the electric force, I used F=qE and found F to equal -0.401 N. But for some reason this doesn't work out to be the right answer. If anyone could tell me where I've gone wrong, it would be much appreciated.

**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 force

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