I'm going a bit crazy. If you thought electronics is hard, well trying to figure out the physics behind it is another thing. I apologize in advance for not being a very competent physicist.
We all know that in a circuit consisting of a battery, some connecting wires, and a resistor has the same current throughout the circuit. It makes sense logically, but if you get down to the nitty gritty, you notice that as electrons move through a circuit, they loose energy, and though charge stays constant, the electrons loose voltage because V = J(energy)/ C(charge).
If we are talking about electron flow, (from - to +), then when the electrons get near the positive terminal of a battery, the voltage between the terminal and the electrons is very small, (close to 0). So if the voltage at that point in the circuit is close to 0, if we were to look at Ohm's law, it would say that I = VR, so if V approached 0, then I would also approach 0. But that is certainly incorrect, since we know the current is the same throughout the circuit.
I've read up a bit and I've heard the term gradient of voltage used. Sorry to bug you guys again for a physics question, but I'm trying to solidify the under-workings a bit.
Thank you.