Click the - button that is to the left of the intensity scale to zoom out such that the top of the scale is at 4.

Question

Move the temperature slider to that of a light bulb. The red part of the thermometer on the far right should just be touching the line marked light bulb. At approximately what temperature does the filament in a household light bulb operate?

Note: This is written in yellow in the simulation, located above the thermometer.

660 K (728 F)

1800 K (2780 F)

3000 K (4940 F)

5700 K (9800 F)

Answer 1

The filament in a household light bulb typically operates at approximately 3000 K (4940 F).