A wire and a battery (a AA Duracell battery just to keep things clear) are connected in series. The way I understand it, the wire (say, 1 meter in length) already has its fixed number of charges, both positive and negative. When those charges move, meaning when there is a potential difference, the charges move ALONG the wire. In other words, if we were to look at the wire (microscopically), we should see something like this: http://www.hasdeu.bz.edu.ro/softuri/fizica/mariana/Electricitatea/Practic/electricity%20book/images/animated_wire_1.gif" [Broken] Where, if we were to paint one electron BRIGHT GREEN, we would be able to follow it all along the wire, correct? That brings up another question..does the battery not supply or absorb any electrons? That would change the amount of charge, thus changing the current, would it not?