When we talk about electricity through a circuit because of a battery it is said that the electrons from negative terminal travel to positive terminal of the battery.
I can't help but imagine about the free electrons in that wire, does the electrons of negative terminal repel them and in that way we say the electron move towards positive terminal? OR the electrons in the negative terminal itself only(with no involvement of wire electrons) moves towards positive terminal?
This might also answer my other question which is: does electrons move in an electric circuit like water moves in a pipe or the electrons of wire just repel and displace from their position?