Ohm
Permanent link to this comic: http://xkcd.com/643/
Image URL (for hotlinking/embedding): http://imgs.xkcd.com/comics/ohm.png
[[A man is holding another by the shoulders.]]
Sitting man: Remember: With great power comes great current squared times resistance.
Narrator: Ohm never forgot his dying uncle's advice.
{{Title text: More generally, with great power comes great dEnergy
dt.}}