Consider an incandescent lightbulb.If you wanted to turn a 10-W lightbulb into a 100-W lightbulb, how would you change the temperature of the filament inside the bulb?
A) Raise its temperature by a factor of 3.2.
B) Raise its temperature by a factor of 1.8.
C) Raise its temperature by a factor of 10.
D) Lower its temperature by a factor of 2.6.
E) Lower its temperature by a factor of 5.4.

Question

Quizplus · Accepted Answer

The power of an incandescent bulb is proportional to the fourth power of the temperature (P ∝ T^4). To increase power from 10 W to 100 W, the temperature must be increased by a factor of (100/10)^(1/4) = 1.8.

Consider an Incandescent Lightbulb