JEE Main · Physics · Alternating Current
Q-Factor Formula in LCR
JEE Main asked Q-Factor Formula in LCR 2 times in 2 of the 108 shifts Lumi analysed, in 2021 and 2022. It belongs to LCR Resonance, in Alternating Current (Physics). The longest wait between two years asking it was 1 year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2021
- last in 2022
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021 and 2022. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Numerical value is the usual form. Skill tested: application.
- Effect on resonant frequency and quality factor
- Quality factor after changing l and r
Difficulty
1 of the 2 questions had a numerical answer.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 30 Jun 2022, Shift 1 · Q46In series RLC resonator, if the self inductance and capacitance become double, the new resonant frequency () and new quality factor…MediumSingle correct
- 26 Feb 2021, Shift 1 · Q30In a series LCR resonant circuit, the quality factor is measured as 100. If the inductance is increased by two fold and resistance is…EasyNumerical value
Shifts: 26 Feb 2021, Shift 1, 30 Jun 2022, Shift 1.
Same topic
Other ideas in LCR Resonance
LCR Resonance has 15 ideas JEE Main has asked; 7 of them came up in more than one question. The 12 most asked are below.
- Resonant Frequency Calculation9× · 2026
- Impedance at Resonance5× · 2024
- Power Factor at Resonance4× · 2023
- LC Energy Oscillation at Resonance3× · 2024
- Resistance Effect on Resonance Curve2× · 2024
- Resonance Condition2× · 2022
- Impedance vs Frequency Curveonce · 2023
- Q-Factor Formula in L, C, Ronce · 2023
- Half-Power Frequenciesonce · 2022
- High-Frequency Blocking in Series LCRonce · 2022
- Parallel Resonance (Anti-resonance)once · 2022
- Series LCR Capacitive Below Resonanceonce · 2022