[taneq]

As anyone who's played light switch disco will know, the light bulb will blow long before you reach the theoretical limit of the series. :D

(Actually thinking about it, that's probably not true because the switching accelerates so fast... the limiting factor is probably actually friction from moving the switch, and/or the tensile strength of the switch housing. I wonder if it would just disintegrate or if it would build up enough heat to properly explode...?)

[mitthrowaway2]

I think the limiting factor will be the inductance of the wire and lightbulb filament, which sustains a current even when the switch attempts to break the circuit!

[taneq]

Ooh good point! Whatever kind of light bulb it is, it will (through inductance, thermal mass or fluorescence) continue to glow (which I’m counting as being “on”) for at least 1/60th of a second after losing AC power. So I’d say it will be glowing quite a lot at the 2 minute mark even if the switch components are forming their own singularity right nearby.

[pixl97]

You'll have to get a planck switch and a single electron bulb... problem is it may or may not exist at any given moment, especially where you want it.