Why does voltage drop across an electric load?

Question

Why does voltage drop across an electric load?

Answer 1

Some form of work is being done (heat, light, sound, motion).  If the voltage didn't drop, we could all power our houses for free.

edit:  To the guy below me -- first don't get so mad about a thumbs down, someone gave me one too and I could care less.     Secondly, work is done on long long distance transmission lines too.  You say its 'change in amperage' that causes voltage drop; I agree.  If you calculate the voltage times the change in amperage, you get the wattage.  Watts are the electric equivalent of work.

Answer 2

Specifically; Voltage drops because resistance increases causing amperage to increase. It is the increase in amperage that actually causes the voltage to drop.

I know that sounds "over simplified" but it is the text book truth...

Look it up.

Thumbs Down Person:

Ok you buy into the other guys explaination so explain this to me if he is correct:

Power suffers voltage drop when NO work is done and there is NO load... Long distance wire runs are an example of this.

Explain how that happens?

Trust me kid... I am correct.