1. The problem statement, all variables and given/known data The work done by an external force to move a -8.5μC charge from point A to point b is 15x10^-4 J. If the charge was started from rest and had 4.82x10^-4 J of kinetic energy when it reached point b, what must be the potential difference between a and b 2. Relevant equations W(nonconservative)=ΔKE+ΔPE V=ΔPE/Q 3. The attempt at a solution 15x10^-4 - 4.82x10^-4 J= .001 J (Work = ke f - ke i (0) + PE f (0) - PE i) So PE i would equal -.001 J. Then v= -.001J/-8.5x10^-6 C = 119.7 Volts. But the answer is supposed to be -119.7 volts?