My question is the following:
In every exemplary circuit, the voltage always equals 0 at the end of electrons "road". I'm aware that the wires are not perfect conductors and they have their built-in resistance as well, but
what makes the conducting material reduce the voltage to 0?
What force/phenomenon/mechanism is responsible for the thorough voltage drop?
In other words,
- WHY does the potential drop on each barrier/component has to sum up to the total electric potential between two battery terminals?
I understand that the current is evenly distributed across the whole circuit and it's equal to Voltage divided by the net resistance of the whole circuit, but
- where does it really come from?
It always seemed a bit mysterious to me, like a self-regulating organism.