On Fri, 31 Oct 2025 at 22:09, David <[email protected]> wrote: > Hi, there's more explanation here: > https://en.wikipedia.org/wiki/Drift_velocity
Sorry, I forgot to mention, their example: https://en.wikipedia.org/wiki/Drift_velocity#Numerical_example Similar to Thomas, calculates a drift velocity of 20 micrometers per second for 1 ampere in a 2mm copper wire. But the final sentence on that page is interesting: "By comparison, the Fermi flow velocity of these electrons (which, at room temperature, can be thought of as their approximate velocity in the absence of electric current) is around 1570 km/s."
