Originally Posted by
Yaatri
The resistance of 110 V bulb is about a quarter of the resistance of a 220 V bulb for the same wattage. If you power a 110V bulb with a 220V source, it will draw draw four times as much power and twice as much current...
Correct; the above posts do the math. However, if you put a 120v bulb on a 240v line, it will burn out in less time than it takes to read this sentence. You'll get a lot of light out of it while it lasts, though.
That said, the original question postulated European (hence 230v) bulbs. That raises other issues, but not this one.