I would be very grateful if you could help point me in the right direction. Thanks[ b]1. The problem statement, all variables and given/known data[/b] If a uniform field E=5i+4j V/m what would be the change in potential from A(-1m, -1m) to B at (1m,2m). Thanks. 2. Relevant equations 3. The attempt at a solution Not sure whether to do the difference between them, or use some trig.