Thus cases a b d and h can be ruled out because they

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Unformatted text preview: ely real impedance at ω = 0. Thus, cases (a), (b), (d) and (h) can be ruled out because they do not fit the given data at ω = 0. Of the four possible circuits, (f) can be ruled out because the impedance of that circuit reduces to R + j ω L in the limit ω → 0 whereas the data clearly show that the impedance has negative (capacitive) reactance at low frequencies. Circuit (c) can be ruled out because the impedance of this circuit tends to 0 as ω → ∞, whereas the data show that the impedance is increasing at high frequencies. Thus, only (e) and (g) are left as possibilities. Case (e) is easily ruled out because the impedance for this circuit will go to zero at some finite frequency where the series LC circuit resonates, whereas the data...
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This homework help was uploaded on 03/13/2014 for the course ECE 453 taught by Professor Staff during the Spring '08 term at University of Illinois, Urbana Champaign.

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