yes they do! :)
Europe uses a different voltage than the US and also has different shaped electrical plugs, so you can't just plug a European appliance into an American electrical outlet. If you can get the right kind of current, then the appliances will still work.
Unlikely- European countries run on 240 volts which is about double the US standard.
Yes
If you buy an adapter
European lamps work on 230 v (240 v in the UK). In the USA the supply is 120/240 v with low-power appliances like lights running on 120 v. But 240 v is usually available in a US house so see an electrician.
Hong Kong uses the same electrical output/sockets as the UK so US appliances will need an adaptor.
Wii games are region-locked, US games for it will not work on a European console.
It means that this electronics appliances conform with European Community standards
Magna Carta
No
Magna Carta
Yes they can. You just need an adapter to plug them in as the electrical plug sockets are different in the UK than in other parts of Europe.
Yes most Nintendo DS games from the US will work on European Nintendo DS systems. However if the game is a DSI enhanced game then it will not work.