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## Homework Statement

Excuse my excellent paint skills

http://imgur.com/PbXdlOW

If the work done by a charge from z to y is W. Would the work be different if it was from z to x then to y.

## Homework Equations

W=vQ

## The Attempt at a Solution

I said it would be the same because delta v would be the same in the end

**1. The problem state, all variables and give/known data**

http://imgur.com/RkG05ph

http://imgur.com/RkG05ph

What is the electric field at the point z and what is the direction

## Homework Equations

E=kq/r^2

## The Attempt at a Solution

I assume the positive and negative would cancel each other out. The distance between the charge and the center is d rad(2)/2 so the charge for one of them would be KQ/(2d^2/4)= 2KQ/d^2 then you just multiply that by 2 because there is two charges, but i don't know the direction