I understand that this is really basics of electronics, but I would really appreciate if somebody clearly explained following question.
So here is a small set of questions related to similar topic:
What's the difference between 1 and 2 terminal source? As far as I understood one wire is the max-potential(+) and the second is low-potential(-). But what is the low-potential? Is it usually 0?
I tried to simulate a simple circuit with capacitor charge/discharge function. In one case I tried to use 2 terminal source, assuming that low-potential ~ virual ground. The capacitor did not discharge. In the second case I used 1 terminal source and ground - capacitor successfully discharged. Why the capacitor did not discharge in the first case?
Is 0V the same as ground?
I have added 2 images below here illustrating the problem.