1. The problem statement, all variables and given/known data A positron is a particle with the same mass as an electron, but with a positive charge. If a positron begins with a speed of 1/10th the speed of light, and then moves from a high voltage region to a low voltage region, what happens to its speed? Ignore any gravitational effects. 2. Relevant equations V=IR possibly PE=qdeltaV? 3. The attempt at a solution I approached this problem using V=IR. By plugging values into this equation, current increases when voltage difference increases. Hence the positron speeds up. This answer matches what's in the back of the book, but I'm not sure if I approached the problem the intended way.