If eletricity from a power outlet must from from negative to positive back into the wall, what happens...?

Question

To the eletricity that flows back into the wall? Are the electrons gone after it is used on a laptop, for example? Is the amp the same, and will the pressure (volts) change on the way out or will it all be the same and go out through the outlet the same way it came in? And what happens to the electrons that go out from my laptop into the wall, is it reused? If so, is there a way i can get it back and re use it ?

Answer 1

Try to visualize a Closed Loop.

The electricity company generator is far away, but try to imagine it's behind the wall. The power is AC, but let's first consider it's Direct Current (DC). Electrons come from the generator, through one outlet slot (narrow one is hot), they go through the circuits of your computer, then they keep traveling back to the generator passing through the other outlet slot (wide one is neutral). This is a continuous process.

Now since the supplied company voltage is Alternating Current (AC), the electrons change direction 60 times  per second (60 hertz), back and forth.