1. The problem statement, all variables and given/known data An electron moves from a point in space where the potential is 100 V to another point where the potential is 200 V. If it started from rest, what is its speed at the end of the trip? 2. Relevant equations I'm not sure what's relevant and what's irrelevant at this point. 3. The attempt at a solution I thought this had something to do with energy, found potential energy at 100 V to be 100 * 1.6E-19, but that doesn't seem to lead me in the right direction. I'm very confused with electric potential in general at the moment, can anyone suggest any resources that will explain it in such a way that even I can understand it? Thanks!