None. The computer stores all of the data that is held in RAM to the master drive. After this is done, it will power off. At this time you can unplug it. No power is used until you start it up again.
The Same As A Computer
No. When you put your computer on hibernate, it transfers all its memory (temporary storage) onto your hard drive. Because the hard drive does not need to use power to keep its files, the only power your computer will use is the tiny watch battery that keeps your clock running, and you don't need to worry about that because it's always using electricity. Putting your computer into standby or sleep will drain your battery but it will do it very slowly.
That varies from computer to computer depending on how much power it needs. Some computers even have several different fuses.
In order to supply power supply to your computer you would need an outlet plug near your computer. Then you can plug your computer into that and necessarily, use an extension.
65-250 depending on the computer source: http://michaelbluejay.com/electricity/computers.html
it is less than u think.... it takes 11 percent of ur battery!
A charger does use power when not charging the computer if it is plugged in. Not as much, but definitely some. How much depends on many factors. It is a good idea to unplug it.
The Power Supply. It is what you plug the power cord into.
When your computer will not power on. When the cooling fan of the power supply has failed. When the amount of hardware in use in your case exceeds the power capability of your power supply.
This depends on the screen type, the screen size, and also the computer's power. For example; a low power computer may use 200watts, where a high power gaming setup might use 800watts. A screen could use as little as 5watts, if it is a small LCD screen, while a big CRT monitor might use 200watts. Your screen should tell you it's power usage, as should your computer, if you examine the power supply.
The Power Supply. It is what you plug the power cord into.
Electrical power. Obviously.