This veritasiun is relevant, complete with reddit discussion: https://www.reddit.com/r/engineering/comments/qxrsrp/the_big_misconception_about_electricity_veri

This veritasiun is relevant, complete with reddit discussion: https://www.reddit.com/r/engineering/comments/qxrsrp/the_big_misconception_about_electricity_veritasium/ https://www.reddit.com/r/engineering/comments/qxrsrp/the_big... What if you made a really big circuit consisting of a battery, switch, lightbulb, and a wire that goes out 300k km on either side making a circuit that should take 1s at the speed of light to travel through. How long after closing the switch will it take for the light to go on?