what happens if you plug an extension cord into itself. free electricity? lol xD?

Absolutely...free and useless.

There are free electrons in the wire. Yep, that's what they're called...free electrons.

But they drift about randomly, in all directions and at various speeds. So they do not march in the same direction to form a current. So without a current, they are useless even though they are free in every sense of the word.

You will have a complete electrical circuit without an electrical energy source included in the circuit.

no it just replyes that your an idiot beliver

maybe

you win the daily moron award ..