Do you mean a 220V as in a power in Europe? Then,
Check your adaptor. It will tell you the input voltage. If it sates that the range of the input voltage in 100V-240V then YES you can plug in your adapter into a 220V outlet.
Please note that some people advise that you plug in the adapter into the power before plugging it into the computer.
If it was sold where 220 volts is the standard then yes it will work.
The iMac is a fantastic computer.
No, the PC version will not work on an iMac. You need to get the Mac version.
220 volts alternating current
Click the link.
Yes
Yes, it will work on Mac.
There is a combined headphone and optical digital audio output (minijack) socket. On the current iMacs it is the first socket on the back.
Mine works fine.
Yes, it works fine.
If you have the Mac version it will work on an iMac but the Windows version will not run on a Mac. It costs $6.99 on the Mac App Store. Click the link to get it.
the 220 volt bulp in 220 volt ac current
I think that it is the imac