# Charged ring.

## Homework Statement

I have the field at the center of a charged ring on the x,y axes (top half has charge density of -lambda, bottom is +lambda lambda=la) to be
E=(lay^)/(2pi epsR) (eps=epsilon) i cant find the potential for this, R=radius,
Can anyone help?

## The Attempt at a Solution

$$E = \frac{\lambda y}{2 \pi \epsilon_0 R}$$