Subject: how does AC electricity make things work?

I know that in most situations energie is taken from a circuit through 
resistance or magnetism. however, in an AC current the electrons wiggle back 
and forth. I also know that  the electrons are not the electricity, they are 
not the carriers of the electricity, and that electricty , in many cases goes 
simultaniesly in two directions. 

Re: how does AC electricity make things work?