In this chapter,parallel of resistor and capacitor connect with AC source.I want to know how to calculate output voltage of capacitor if AC input is 220V AC.please reply for me.sorry for my english.Thanks

 

Your English is fine, your concept less so.

Could you please make a schematic sketch of the circuit you ave in mind? Then we will all know exactly what your question is.

And welcome to the forums!

 

The output voltage of your capacitor changes. It drops exponentially when disconnected from the source and connected to a load.

As ErnieM suggested a schematic would be necessary to be able to give you a better answer.

Matt

 

The output will depend on the load connected to the capacitor.