Advanced Qualification · A-001 Advanced theory · A-001-005-009
Quel est le facteur de qualité (Q) d'un circuit RLC parallèle quand la résonance = 3,625 MHz, L = 42 microhenrys et R = 220 ohms?
- A0,00435
- B0,23
- C2,3
- D4,35
Correct answer: B — 0,23. Question tirée de la banque officielle d'ISDE.
Why
The value 0.23 is correct because the quality factor, or Q, for a parallel circuit measures how sharply it resonates by dividing the resistance by the reactance of the inductor at the resonant frequency. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced theory is section A-001 of the Advanced exam: Advanced theory: time constants, reactance, impedance, resonance, Q, and the mathematics behind tuned circuits.
Drill A-001 — free, no account