Advanced Qualification · A-001 Advanced theory · A-001-003-010
Quelle est la fréquence de résonance d'un circuit RLC en série si R = 47 ohms, L = 1 microhenry et C = 9 picofarads?
- A17,7 MHz
- B1,77 MHz
- C53,1 MHz
- D5,31 MHz
Correct answer: C — 53,1 MHz. Question tirée de la banque officielle d'ISDE.
Why
The resonant frequency of 53.1 MHz is correct because it is the specific point where the inductor and capacitor cancel each other out, leaving only the 47 ohm resistor to oppose the flow. 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.
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