An electrical outlet has a ground connection as a protection device from electric shock. For example, imagine that you plugged your metal (metal conducts electricity very well) kettle into an ungrounded socket. Everything would be OK if the wiring was fine. However, as soon as the cable or wiring becomes damaged then the electricity will pass into the metal kettle - making the kettle 'live' so the next person to touch the kettle will receive a nasty electric shock. Now if the kettle had a ground wire, then the electricity in the kettle would be passed back to the panel box, tripping the breaker and reducing the chances of electric shock. So in the case of your computer, most of the external parts are plastic so the risk of electrocution is minimised as plastic will not conduct electricity very well. However there are many components in your computer that could be damaged, so it is a risk I would not be willing to make as the ground connection will help protect these parts from damage.
Actually, there is a little more to the answer. The ground is still primarily for protection, and plastic or not, a device with a three-pronged plug should be plugged into a grounded outlet. If it didn't need the ground, the plug would be two-pronged. Now in addition to the safety, many of today's sophisticated devices have made the ground an active part of the circuitry, and will be unstable without it. It's hard to say what your particular computer, or any other device, would do, but there's no doubt that it would be better off with it, and may be damaged without it.
Nothing happens when you put a magnet near an electrical wall outlet.
A computer does not have a generator, it requires standard AC electrical current which is available in any electrical outlet throughout your home.
unplug the computer from the AC outlet.
The power supply of the computer is where the electrical current from your outlet is sent and then dispersed throughout the components in your computer.
Because it has electricity flowing to the outlet.
the form of energy changes and the total of energy increases
There are two different electrical outlets for North America. The first, electrical outlet A, is used in North America and Japan. It is 2 blade NEMA 1-15 ungrounded. The second, only used in America, is 3 pinned NEMA and both are 15A/125V.
to many electrical cords plugged into one outlet
The unit will run but you may get shocked by touching it, now or sometime in the future.
The steps to switch on a computer begin with making sure that the computer and its peripherals are plugged into an electrical outlet. Turn the power switch on the electrical outlet and press the power button on the computer tower. Turn on the computer monitor and wait for the computer system to start up.
When was the first outlet made
A 15 amp 125 volt outlet is a household outlet.