Hi All, I understand that when a capacitor is subjected to a DC voltage, it stores charge. However, when the DC voltage is removed (open circuit) why does the capacitor not internally discharge? Shouldn't the charge just go back to where it was, leaving the capacitor with 0 stored charge? I am trying to understand the capacitor through the membrane in a water pipe example (http://en.wikipedia.org/wiki/Capacitor#Hydraulic_analogy). Wouldn't the water be pushed back once the water pressure was relieved(open circuit)? Thanks in advance.