electricty

[vince07595]

how from the outlet tranfers the the device for example when u plug something why does it work???

[heathfield]

Welcome to Britain, Vince.

[buildersmate]

The switch is like a gate to a field. When you open the gate, the little electrons runs through the gate fast up the copper wire path to the device, then they run back down again. Its like letting sheep out of the field, except the sheep tend not to come back again.

[nightmare]

If you want a question answered, a good starting point would be to ask it in a recognised language.

[nightmare]

to buildersmate.
the electrons in a wire actually only move quite slowly (typically of the order of a few millimetres per second), but the overall effect of the current travels extremely quickly

[squarebear]

I heard that the electrons move about 0.3 mph.

If you imagine the wire is a long hollow tube and the electrons are marbles in a line within that tube, when you push a marble in one end, a marble will drop out the other end. So even though electricty moves really slow, it's overall impression is that it is extremely fast.

[landie]

So there must be some electricity already in the cable when you switch on? I didn't think that it worked in that way, squarebear.

[squarebear]

That's what I was taught anyway. Yes electrons are everywhere.

[squarebear]

Read the "quick answer" on this link. It might explain it better than I can:
http://amasci.com/miscon/speed.html

[buildersmate]

Fair point Nightmare - I was trying to get in the spirit of an entertaining answer.

[compostheap]

is that electric light or gas light ?