Advanced Qualification · A-001 Advanced theory · A-001-005-008
What is the Q of a parallel RLC circuit, if it is resonant at 3.625 MHz, L is 3 microhenrys and R is 2.2 kilohms?
- A25.6
- B31.1
- C0.031
- D32.2
Correct answer: D — 32.2. From the official ISED question bank, verified word for word.
Why
The value 32.2 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 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.
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