Question
Why is an incandescent bulb hot to touch when it has been switched on for a while?
Answers
Ms. Sue
http://www.highlightskids.com/science-questions/how-do-light-bulbs-work
Aarti
The incandescent bulb heats the filament (typically a coil of wire) to thousands of degrees so that it glows.
Since the bulb itself is generally at most a few inches from the filament, it gets pretty hot as well.
Since the bulb itself is generally at most a few inches from the filament, it gets pretty hot as well.