I'm currently in college at the moment and of course in high school we did all these stuff about electricity and I got through that alright. But now I'm getting bugged: what exactly is voltage? Sure V = Joules/coulomb so can one treat it as the energy "carried" by an electron? If so, shouldn't this raise the eV?(but then electron drift is such a slow process). And when electrons return to battery(the plates) shouldn't it gain KE (in eV) equivalent to the voltage of the battery.(Since you are putting an electron between two charged plates) Very newbie question, but its one of those that lingers over your head and just makes you feel that little bit uncomfortable.