Hello, I'm kind of new to electronics, I've been understanding things pretty well but I'm confused about voltage. I know that it is the potential energy difference between 2 points per unit charge, but what determines voltage? If we use gravitational potential energy, the heavier the masses and the farther they are away the more GPE you have, does this mean if I have 2 charges in space the more difference in charge I have and the farther they are away the more PE I have? What if we put 2 charges on 2 sides of a conductor, how would I change the voltage across the conductor? Increasing the difference in charge? How does a conductor change things? Answering any of these questions will help me, thanks.