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## Homework Statement

A +30uC charge is placed 40cm away from an identical +30uC charge. How much work would be required to move a +0.5uC test charge from a midway between them to a point 10cm clover to either of the charges?

## Homework Equations

E=V/d, W=qV, k=8.99*10^9

## The Attempt at a Solution

well...

W=qV=(0.5*10^(-6)){(30*10^(-6)k/0.1)-(30*10^(-6)k/0.2)}=1.32

the answer should be 0.45J...

Please, anyone who understands this question, explain me how to get the answer!