Most sources claim that the speed of electricity in a wire (or signal/information speed) is the EM wave propagation speed of the metal.
What about tangled wires? Am I correct in assuming that for the signal to pass a sharp turn in a wire, electrons need to accumulate there to make the "signal pass"? As electrons travel very slowly compared to the EM wave propagation, surely this adds a lot of delay to the signal?
Edit: made some pictures. In the initial moment, when connecting the wire, there's electric field at point 1, but none at points 2 and 3. When electrons accumulate on the first turn, there will be electric field in point 2 and so on. Is this understanding correct? Or is it more to do with EM waves somehow reflecting through the wire and no electron accumulation?