Advanced Qualification · A-001 Advanced theory · A-001-004-007
Quelle est la fréquence de résonance d'un circuit RLC parallèle si R = 4,7 kilohms, L = 40 microhenrys et C = 6 picofarads?
- A10,3 MHz
- B6,63 MHz
- C6,63 kHz
- D10,3 kHz
Correct answer: A — 10,3 MHz. Question tirée de la banque officielle d'ISDE.
Why
The resonant frequency depends only on the inductor and capacitor values, ignoring the resistor, so plugging 40 microhenrys and 6 picofarads into the standard formula yields 10.3 MHz. 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