Suppose a uniform electric field $E$ exists between to oppositely charged metal plates (one is positively charged and one is negatively charged). If the plates move apart, and the charges on each plate stay the same, why does the potential difference increase?
From my understanding (which I know is somehow flawed), the electric potential of each plate seems to vary inversely with distance $r$. However, as distance increases, the potential difference between the plates increases. I think the potential on both plates would decrease, but this does not determine anything about the difference between the potentials.