Ohms law, electronics math question

[Mathster]

http://www.theledlight.com/LED101.html

plugging diaelectric caps in backwards is fun too.
You really wanna see fun, get a van de graf machine and you can put a localized static charge on those clear plastic sheets teachers like to use as transparencies.
Another good one is to leave 1F caps laying around charged.

[cauzomb]

Another good one is to leave 1F caps laying around charged.

LOL! happened a couple times with broken camera flash caps. We used to charge them up, then use alligator clips to apply about 590v 55kuf to either end of various food items from the school cafeteria...The best was turning cooked rice into arc-lamps.