AC (alternating current). Depending on the region, it may be around 110 volt, or around 220 volt. Also depending on the region, it may come at a frequency of 50 Hz, or of 60 Hz.
Household utility AC power is supplied at 60 HZ in the US and most of the rest of North America, and at 50 Hz in most of the rest of the world.
If the power supply is 60 Hz AC, and the Wii says 60 Hz, there is no problem. The built-in transformer provides DC power to the electronics. Do not try to use a Wii designed for a 50 Hz system at a higher voltage.
There is no problem with using 110 volt 50 Hz power hand tools on 120 volt 60 Hz supplies.
Frequency is independent of voltage magnitude. It depends upon type AC or DC.
It might explode, it might blow the fuse, but it will not work properly. But laptop power supplies seem to work from 100 v to 240 v without any switching.
Yes it can. It is within the normal voltage / HZ tolerance.
House power is generally AC current. Depending on the country, it runs at 50 Hz or 50 Hz.
No. However, it may be okay to connect 50 Hz appliance to 60 Hz.
It all depends on what you are plugging in, if the voltage match up then you are pretty safe.
If this is written on the apparatus or nameplate, it is the EQUIPMENT VOLTAGE. If your local AC power supply is 110 volts, 115 volts, or 120 volts, this is your SYSTEM VOLTAGE. When any of the three is provided at the US standard of 60 Hz, the difference for machinery is usually negligible.