Extra exam question E4B08
Subelement E4, AMATEUR PRACTICES· Group E4B
Which of the following can be used to determine the Q of a series-tuned circuit?
- A.The ratio of inductive reactance to capacitive reactance
- B.The frequency shift
- C.The bandwidth of the circuit's frequency response (correct answer)
- D.The resonant frequency of the circuit
WhyThe Q of a series-tuned circuit can be determined from the bandwidth of its frequency response. The Q of a series-tuned circuit can be found from the bandwidth of its frequency response, a narrower response relative to the resonant frequency indicates a higher Q, since Q is defined as the resonant frequency divided by that bandwidth, answer C. The ratio of inductive to capacitive reactance, a frequency shift, and the resonant frequency alone don't by themselves give you the circuit's Q without also knowing that bandwidth.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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