What country are you in? The light socket should be the same voltage as your outlets.
yes it should work. with exceptionsthe light soccket to plug adapters are just wires that change shape to make it easy to plug what u want inthey tell you a rateing so you know what i works with most 110v stuff here in utah works up to like 300 v so it depends on the guage of the adapterif it is to small it will heat up and burn out. but as long as you are running small ampres (like the arduino withs acouple of shileds/ atachments you will be fine.just make sure the wires are not really really really thin.BTW what are you makeing.
I see. I'm trying to make a bluetooth light bulb. I'll need to find a way to convert 220V to 5V.
I'll need to find a way to convert 220V to 5V.