Advanced Qualification · A-001 Advanced theory · A-001-005-003
Quel est le facteur de qualité (Q) d'un circuit RLC parallèle quand la résonance = 4,468 MHz, L = 47 microhenrys et R = 180 ohms?
- A13,3
- B0,136
- C7,35
- D0,00735
Correct answer: B — 0,136. Question tirée de la banque officielle d'ISDE.
Why
The value 0.136 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 specific 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