In the circuit shown, the light bulb has a resistance R, and the ac emf drives the circuit with a frequency Z. Assuming that the brightness of a bulb is proportional to the power dissipated, which of the following statements is correct?
A. The light bulb glows most brightly at very low frequencies.
B. The light bulb does not glow at any frequency because AC current cannot flow through the bulb due to the presence of the capacitor.
C. The light bulb glows most brightly at very high frequencies.
D. The light bulb glows with the same brightness at all frequencies.
E. The light bulb glows most brightly at the frequency ω = 1 / √LC
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Impedance in AC Circuits concept. You can view video lessons to learn Impedance in AC Circuits. Or if you need more Impedance in AC Circuits practice, you can also practice Impedance in AC Circuits practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Costantino's class at PSU.