Extra exam question E5A09
Subelement E5, ELECTRICAL PRINCIPLES· Group E5A
How is the Q of an RLC parallel resonant circuit calculated?
- A.Reactance of either the inductance or capacitance divided by the resistance
- B.Reactance of either the inductance or capacitance multiplied by the resistance
- C.Resistance divided by the reactance of either the inductance or capacitance (correct answer)
- D.Reactance of the inductance multiplied by the reactance of the capacitance
WhyThe Q of a parallel resonant RLC circuit is calculated as resistance divided by the reactance of either the inductor or the capacitor. For a parallel resonant RLC circuit, Q is calculated as the circuit's resistance divided by the reactance of either the inductor or capacitor, the inverse relationship from a series circuit, where Q is reactance divided by resistance instead, answer C. Multiplying reactance by resistance, or multiplying the two reactances together, doesn't give the Q of either circuit configuration.
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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