>>13912429Also, I will probably wrap up the confusion surrounding the video as well, since I alredy started writing about stuff.
Veritasium's video is correct, there indeed will be electric current across the light bulb in d/c time, where d is the distance of the source to the light bulb. What it fails to mention that this is due to the emission of EM wave due to the switch being turned on, i.e. the continuity of the electric field strength giving rise to a wave front (em wave) that induces transient current across the light bulb, potentially lighting it up for a short time depending on the field strength of the wave.
Then, steady-state operation of the light-bulb is only achieved after 99.9% of the energy arrives. This energy is tied closely to the ideal conductor's surface, as since there are surface currents, there are also (moving) surface charges, each of which (at rest) generates electric field according to Coulomb's law, so the picture is the same as in the video, except the energy flow lines in the video don't highlight the magnitude of the Poynting vector in any way, which is actually largest on the surface of the ideal conductor and drops further away from it (in the simplest case for a moving charge according to Liénard-Wiechert potentials).
I hope this post clears out some of the confusion for some people ITT.
