Almarg
Simply_q, could you clarify what you mean when you say that electrons drift under ac conditions?
Sure.
Are you saying that they drift back and forth over a very short distance within the cable, as I indicated in my post yesterday? Meaning that a specific electron near the source end of the cable will never emerge from the other end of the cable (assuming there is no dc offset present)?
Yes.
My point has been that whenever there is any current flow (in this particular context), there must be a net drift of electrons. It matters not that the drift may alternate direction over time. To say there is no drift is to say there is no current.
Or are you saying that they drift, to cite an example, all the way from the "hot" connection of the source component's output jack, through the cable and the input circuit of the destination component, then through the other leg of the cable to the ground connection of the source component's output jack, and then all the way back over that same route, but in the other direction, to the "hot" connection of the source component's output jack?
No.
Or something else?
Only if you want to open up a can of quantum mechanics. :)