Hello everyone, I know electronics pretty well. I'm pretty good with that, but my physics and chemistry understanding of what is going on is a little weak. I'm trying to do a good Youtube video on Ohm's law and I want to have a solid foundation to my understanding. Not just V = IR, but actually understanding what it means, so I'd appreciate your help Voltage is the measure of the amount of energy on a charge. I know you have to measure the voltage across two points. So is voltage technically the difference in the energy of a group of electrons to the amount of energy of a group of...protons? As in, there's lots of electrons at the negative terminal of a battery, and lots of protons at the positive terminal. So the voltage would be a difference in J/-C to J/+C. Is my understanding incorrect? So electrons leave the anode of a battery and eventually make their way to the cathode.The reason they move is because they want to get to a more positive place. As they move through the circuit the electrons loose energy in the elements they travel through because they encounter resistance. Usually the energy is expelled as heat. By the time the electrons are near the cathode of the battery, they don't have a very large difference in voltage in respect to the voltage on the cathode. Is that correct? Okay so when the particles are near the cathode, they have a low voltage, so what makes them move? How do all of the eletrons in a simple battery-resistor circuit all move at the same (net) pace even though some of them are more more energized than others? This is probably a fundamental problem I have understanding this. My biggest question is how are they "re-energized"? They find their happy place at the positive terminal, but then they are suddenly made unhappy again by a chemical reaction which somehow puts them at the anode of the battery again, and then they seek to become happy again so they go through the circuit to reach the more positive place? If you have anything to add, I would really really really really appreciate it? Did I mention I'd really appreciate it? Thanks.