DQ12D_solution - Discussion Question 12D P212, Week 12...

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Discussion Question 12D P212, Week 12 Low-Pass and High-Pass Filters The circuit shown at right has an AC generator of peak EMF E max and frequency ω connected in series with a resistor R and a capacitor C . Let’s analyze the behavior of this circuit at extreme values of the frequency . Important note : Since there is no inductor present, you may think that we’re back to the material of “RC Circuits” that we studied a month ago. But not so! Those “RC circuits” were connected to DC batteries of constant voltage! This one is being driven by an AC generator , which makes it behave in a totally different way. This is an RLC circuit like any other … the fact that L = 0 just simplifies things a little bit. (a) Draw a phasor diagram for this circuit, showing the relative phases of the voltages V R , V C , and E . (b) Now draw phasor diagrams for the cases when the driving frequency is extremely small , and when it is extremely large . In both cases, please answer the following questions: ± How does the peak voltage V R ,max
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This note was uploaded on 06/16/2011 for the course PHYS 212 taught by Professor Kim during the Spring '08 term at University of Illinois, Urbana Champaign.

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DQ12D_solution - Discussion Question 12D P212, Week 12...

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