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Unformatted text preview: f) can be ruled out,
because each of these has impedance with ﬁnite real part in the limit ω → ∞, whereas the data show that
the real part goes to zero in the limit. Case (g) can be ruled out because that topology will have impedance
that will behave like j ω L in the limit ω → ∞ whereas the data show an impedance that is capacitive at high
frequencies. Hence, the circuit must have topology (c). The impedance for (c) is:
Z=
or
Z= 1
(R + j ω L)
j ωC (R + j ω L)
R + j ωL
.
=
j ω C (R + j ω L + 1/(j ω C ))
1 − ω 2 LC + j ω...
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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
 Staff

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