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## Homework Statement

The work done by an external force to move a -8.4*10^-6C charge from point a to point b is 1.9*10^3J. If the charge was started at rest and has 4.81*10^4J of KE when it reach pt. B, whats the change in PE of the charge?

## Homework Equations

Not sure

W=change in U

PE=KE

## The Attempt at a Solution

I tried a few things but im just not sure how to approach this problem. I attempted V=Uelect/q and W= change in U, U=qV.... just looking for some direction, thanks!