Hi I'm back. Sorry for all the threads. I hope I'm not disrupting the normal thread protocol of this forum. However, there are some things that I really been wanting to understand for some time now. I was talking about capacitors in series, but this thread sort of ties into it but does deserve its own thread. I'm wondering about voltage. I read and hear the same analogy over and over again. Voltage is potential energy analagous to rolling a boulder up a hill. There is work required to roll a boulder up a hill. So as you move a boulder up a hill it gains potential energy. This is exactly what happens in an electric field. As a positive point charge is brought closer and closer toward another positive point charge there is work required to move it closer to another point charge. It gain potential energy. However, there is a big difference between the boulder on the hill and the positive point charge in the electric field. The boulder's potential energy may increase, but the force remains constant no matter how high you bring it up the hill. F = MASS * GRAVITY (ACCELERATION). For the positive point charge, the potential energy increases as you bring it closer to another positive point charge, but also the force exerted on the positive point charge increases exponentially as you bring it closer to another positive points charge. F = (q0*q)/(r*r). Where r = distance between the charges. Notice that its squared. So I don't think a hill analogy is adequate in describing voltage. I believe that voltage is like water pressure in pipes. That is, as more water is packed into the same pipe volume then the water pressure goes up. I believe that as more charge is packed into a conductor, that more force is exerted on each individual charge and hence the whole conductor has more charge pressure. This pressure is what pushes charge thru a circuit. I am looking for an open ended discussion on this matter. Please let me know if my thoughts are correct. As I am assuming this to be the case and don't know for sure.