Chapter 26, Problem 66MSPP

Halogen Bulbs

Halogen bulbs have some differences from standard incandescent lightbulbs. They are generally smaller, the filament runs at a higher temperature, and they have a quartz (rather than glass) envelope. They may also operate at lower voltage. Consider a 12 V, 50 W halogen bulb for use in a desk lamp. The lamp plugs into a 120 V, 60 Hz outlet, and it has a transformer in its base.

The 12 V rating of the bulb refers to the rms voltage. What is the peak voltage across the bulb?

A. 8.5 V

B. 12 V

C. 17 V

D. 24 V