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Electronic charges (electrons) move between 2 different positions because of an

electrical property called "difference of potential " (or charge).

If one position is charged with several hundred volts, say in the case of static electricity, and it is moved toward a conductor which has no charge, the charged item

will break down the air's resistance, and discharge to the neutrally charged conductor, when it gets close enough. That is why you sometimes feel a shock in the winter, when you touch a doorknob, or step out of a car to a (damp) concrete floor. You are the element which acquired the charge, and you feel the shock when you discharge to ground. Even though the charge may be several hundred volts, it is harmless to you

because of the low current involved. I still however, find it painful.

If you are asking why electricity flows through a wire, it is still due to the difference of potential discussed above. Just think of the wire, (or conductor), as a pipe for the electrons to flow through, between the two reference points at the ends of the pipe. When one electron goes in one end, one electron comes out the other end. This flow of electrons is what we call "current".

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