Friday
March 27, 2015

Homework Help: physcial science

Posted by dave on Monday, June 25, 2007 at 12:49am.

Does a light bulb glow because....
a) there is burning inside
b) an electric current glows
c) the filament is hot
d) a very small current is flowing

Wouldn't you think it was because the filament was hot?

Of course, a very small current also CAN make a filament hot if the resistance is correct for the circuit; however, I think the intent of the question is to answer c.

That was my first choice, but does an electric current glow?

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