capacitor

Hmmm its a little difficult to decypher what you are actually asking.

Could you be a little more concise?

John.

Capaictors store charge. They can be used to pass AC, Block DC, store a charge filter - etc..

You question needs to be more specific.

Capacitors can store a charge and hold it for some length of time, when they are charged with DC. Polarized, electrolytic capacitors are used only in DC circuits, as reversing the current will cause a breakdown of the dielectric. Capacitors rated for AC (or current without regard for polarity) do not store charge per se. They do, however store it and give it up at the rate of the AC it is subjected to, resulting in a current waveform that lags the voltage waveform. All components in an electrical circuit will affect the phase shift between current and voltage.

Current leads the Voltage in a capacitor.

You're correct! I wrote it backwards even though I was thinking the other way around.