Question

As the electric current in a lightbulb slowly increased, the filament grows more and more brightly... Why does this happen?

Answer 1

isaidrawr: as I think you know, OpenStudy works best if you don't "drop and run", dropping and question and then not staying to engage in a reply.

I can answer this and your questions for you, but you'll learn much more if we have a conversation about it. So consider staying around next time.

Answer 2

Power = I^2 R
As current increases the power increases exponently thus the heat and light increases Also the filament resistance of the bulb will increase as it temperature increases. I echo JamesJ comment, it would be a more learning experience if there was some dialog.

Answer 3

@JamesJ , Sorry for leaving . I had to go to piano class .