It is very desirable to be interested in both. Using a reservoir capacitor of insufficient working voltage, or connecting it in the wrong polarity, can lead to rapid failure.I have posted a .PNG, I hope It is visible now.
The schematic is quote for:
I'm interested by the calculating ideea not by conections.
If the capacitor is an electrolytic, which is usually the case, the capacitor may burst open violently. Do you want to have an accident?