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Giancoli's Physics: Principles with Applications, 7th Edition
21
Electromagnetic Induction and Faraday's Law
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21-1 to 21-4: Faraday's Law of Induction
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21-5: Generators
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21-6: Back EMF and Torque
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21-7: Transormers
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21-10: Inductance
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21-11: Magnetic Energy Storage
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21-12: LR Circuit
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21-13: AC Circuits and Reactance
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21-14: LRC Circuits
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21-15: Resonance in AC Circuits
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 68
Q

Suppose circuit B in Fig. 21–42a consists of a resistance R=520  ΩR = 520 \; \Omega. The filter capacitor has capacitance C=1.2  μFC = 1.2 \; \mu \textrm{F}. Will this capacitor act to eliminate 60-Hz ac but pass a high-frequency signal of frequency 6.0 kHz? To check this, determine the voltage drop across R for a 130-mV signal of frequency

  1. 60 Hz;
  2. 6.0 kHz.
(a) Common use for a capacitor as a filter.
Figure 21-42 (a) Common use for a capacitor as a filter.
A
  1. 30 mV30 \textrm{ mV}
  2. 130 mV130 \textrm{ mV}
This is a high pass filter since high frequency signals pass through it.
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