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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.
- Spring '08