1. An AC source with a frequency of 60 Hz is connected to a lightbulb. The instantaneous brightness ofthe lightbulb depends on the magnitude of the instantaneous current. Explain why the brightness of abulb can flicker (i.e., oscillate with time) and find the frequency of the flicker. Why don't we notice theflicker?2. Discuss why it is relatively easy to change the amplitude of an AC voltage to a higher or lower value, butwhy it is difficult to change its frequency.3. An LC circuit is called an oscillator. What, physically, is oscillating in such a circuit? What variables areperiodic?

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1. An AC source with a frequency of 60 Hz is connected to a lightbulb. The instantaneous brightness of the lightbulb depends on the magnitude of the instantaneous current. Explain why the brightness of a bulb can flicker (i.e., oscillate with time) and find the frequency of the flicker. Why don't we notice the flicker?

1. An AC source with a frequency of 60 Hz is connected to a lightbulb. The instantaneous brightness of the lightbulb depends on the magnitude of the instantaneous current. Explain why the brightness of a bulb can flicker (i.e., oscillate with time) and find the frequency of the flicker. Why don't we notice the flicker?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter33: Alternating Current Circuits

Section: Chapter Questions

Problem 33.80CP: P33.80a shows a parallel RLC circuit. The instantaneous voltages (and rms voltages) across each of...

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An AC generator with an output rms voltage of 36.0 V at a frequency of 60.0 Hz is connected across a 12.0-F capacitor. Find the (a) capacitive reactance, (b) rms current, and (c) maximum current in the circuit. (d) Does the capacitor have its maximum charge when the current takes its maximum value? Explain.
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In an ideal AC circuit with capacitance, there is no resistance. Is any energy dissipated? How about in a real AC circuit with capacitance?