With my grade 9 students, I natter on about how it's the current, not the voltage that's dangerous. I also have to deal with the AC versus DC fallacy... which one is more dangerous to use on a workbench (after that lesson, I occasionally get the odd hell-i-on who takes a dozen or so flashlight batteries and wire them up in series). Sigh.... BTW, I like how
@Mr Trev zapped himself... and then did it again to look at the pretty arc. (+1) Nice! I'm working hard on making more proto-Mr_Trev (s) come up through the ranks.