Advanced Qualification · A-001 Advanced theory · A-001-005-001
Quel est le facteur de qualité (Q) d'un circuit RLC parallèle quand la résonance = 14,128 MHz, L= 2,7 microhenrys et R = 18 kilohms?
- A71,5
- B75,1
- C7,51
- D0,013
Correct answer: B — 75,1. Question tirée de la banque officielle d'ISDE.
Why
The value 75.1 is correct because the quality factor, or Q, for a parallel circuit measures how sharply it resonates by comparing the resistance to the reactance of the coil 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