> Re the movement of electrons: in fact they move very slowly on average under the influence of an electric field, but by their "bouncing against" their neighbo

> Re the movement of electrons: in fact they move very slowly on average under the influence of an electric field, but by their "bouncing against" their neighbours, the electric impulse is transmitted quickly through the conductor. When you apply a voltage across a conductor it generates an electric field, and the electric field propagates at the speed of light (it’s an EM wave). I could be wrong, but I think that is why the electric impulse transmits quickly even though the drift velocity is so slow.