# Strength of Electric Field with a point charge

1. Sep 29, 2011

### ltruiz45

Problem:
A +11 nC charge is located at the origin.

Question:
What is the strength of the electric field at the position x,y (-5cm, 5cm) ?

I would think you would do this but when I try it I get the wrong answer

for x axis - E=k|q|/r2
For y axis - E=k|q|/r2

Then $\sqrt{}Ex^2 + Ey^2$

Last edited: Sep 29, 2011
2. Sep 29, 2011

### Redbelly98

Staff Emeritus
What is "a 11 charge"?
At what position?