A series RLC circuit with L = 25 mH, C = 0.8 μF and R = 7Ω is driven by a generator with a maximum emf of 12V and a variable angular frequency ω. At ω = 8000 rad/sec the impedance Z of the circuit is:
a) Z = 7 Ω
b) Z = 12.3 Ω
c) Z = 27.1 Ω
d) Z = 44.3 Ω
e) Z = 172 Ω
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