Advanced Qualification · A-001 Advanced theory · A-001-005-004
Quel est le facteur de qualité (Q) d'un circuit RLC parallèle quand la résonance = 14,225 MHz, L = 3,5 microhenrys et R = 10 kilohms?
- A71,5
- B31,9
- C7,35
- D0,0319
Correct answer: B — 31,9. Question tirée de la banque officielle d'ISDE.
Why
The value 31.9 is correct because the quality factor, or Q, measures how sharply a circuit resonates by comparing the resistance to the reactance of the coil at that 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