[Answer] theoretically when a capacitor is charged it will hold its charge indefinitely. Actually it will lose its charge why?

Answer: no such thing as a perfect dielectric. the electrons eventually move from the negative plate to the positive side or leak through causing the capacitor to discharge

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theoretically when a capacitor is charged it will hold its charge indefinitely. Actually it will lose its charge why? theoretically when a capacitor is charged it will hold its charge indefinitely. Actually it will lose its charge why? no such thing as a perfect dielectric . the electrons eventually move from the negative plate to the positive side or leak through causing the capacitor to discharge Once the capacitor is “fully- charged ” the capacitor blocks the flow of any more electrons onto its plates as they have become saturated. However if we apply an alternating current or AC supply the capacitor will alternately charge and discharge at a rate determined by the frequency of the supply. A capacitor can keep its charge indefinitely (in theory). That's why with large capacitors it is dangerous to open high voltage equipment even years after they have been disconnected . What you are probably asking is the time the capacitor needs to discharge. It will discarge according to an exponential law. In the case you described (a capacitor feeding a bulb) you will have an RC circuit. Mon Nov 28 2016 · An ideal capacitor would never lose any charge. Capacitors are made of less than ideal materials and will over time lose some of their charge. Assuming they are not connected to anything else – isolated – they can discharge by electron migration across the surface from one terminal to another or in the less-than-perfect insulating materials inside. Tue Feb 15 2011 · Theoretically with a constant (less-than-breakdown) voltage applied forever a capacitor will never completely charge because there's always a difference in pote...

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