Advanced Qualification · A-001 Advanced theory · A-001-005-010
What is the Q of a parallel RLC circuit, if it is resonant at 3.625 MHz, L is 43 microhenrys and R is 1.8 kilohms?
- A 54.3
- B 23
- C 1.84
- D 0.543
Correct answer: C — 1.84. From the official ISED question bank, verified word for word.
Why
The value 1.84 is correct because the quality factor, or Q, for a parallel circuit measures how sharply it resonates by comparing resistance to reactance. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced theory: time constants, reactance, impedance, resonance, Q, and the mathematics behind tuned circuits.