JEE Physics
LCR Circuits & Resonance: JEE Questions & Solutions
24 previous-year JEE Physics questions on LCR Circuits & Resonance, each with a worked step-by-step solution.
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Previous-year questions
- 01A capacitor C is first charged fully with potential difference of V₀ and disconnected from the battery. The charged capacitor is connected…MCQEasyJEE 2026
- 02Using a variable frequency ac voltage source the maximum current measured in the given LCR circuit is 50 mA for V = 5 sin(100t) The values…NVAMediumJEE 2026
- 03For the series LCR circuit connected with 220 V, 50 Hz a.c. source as shown in the figure, the power factor is α/10. The value of α is.MCQEasyJEE 2026
- 04A series LCR circuit is connected to an alternating source of emf E. The current amplitude at resonance frequency is I₀. If the value of…MCQEasyJEE 2025
- 05In a series LCR circuit, a resistor of 300 Ω, a capacitor of 25 nF, and an inductor of 100 mH are used. For maximum current in the circuit,…NVAEasyJEE 2025
- 06For the AC circuit shown in the figure, R = 100 kΩ and C = 100 pF, and the phase difference between Vᵢₙ and (V_B - V_A) is 90^°. The input…NVAMediumJEE 2025
- 07An inductor of reactance 100 Ω, a capacitor of reactance 50 Ω, and a resistor of resistance 50 Ω are connected in series with an AC source…NVAEasyJEE 2025
- 08A series LCR circuit with L = 100/π mH, C = 10⁻³/π F and R = 10 Ω is connected across an ac source of 220 V, 50 Hz supply. The power factor…NVAEasyJEE 2024
- 09A capacitor of capacitance 100 μ F is charged to a potential of 12 V and connected to a 6.4 mH inductor to produce oscillations. The…MCQEasyJEE 2024
- 10A series L-R circuit connected to an AC source E = 25 sin(1000t) V has a power factor of 1/√2. If the source of emf is changed to E = 20…MCQMediumJEE 2024
- 11A capacitor of reactance 4√3 Ω and a resistor of resistance 4 Ω are connected in series with an AC source of peak value 8√2 V. The power…MCQEasyJEE 2024
- 12In the circuit shown in the figure, the ratio of the quality factor and the bandwidth is s.NVAMediumJEE 2023
- 13In an LC oscillator, if values of inductance and capacitance become twice and eight times, respectively, then the resonant frequency of…MCQEasyJEE 2023
- 14An LCR series circuit of capacitance 62.5 nF and resistance of 50 Ω is connected to an A.C. source of frequency 2.0 kHz. For maximum value…NVAEasyJEE 2023
- 15A series LCR circuit is connected to an AC source of 220 V, 50 Hz. The circuit contains a resistance R = 80 Ω, an inductor of inductive…NVAEasyJEE 2023
- 16For the given figures, choose the correct option:MCQEasyJEE 2023
- 17An inductor of inductance 2 μ H is connected in series with a resistance, a variable capacitor, and an AC source of frequency 7 kHz. The…NVAEasyJEE 2023
- 18In a series LR circuit with X_L = R, the power factor is P₁. If a capacitor of capacitance C with X_C = X_L is added to the circuit, the…MCQEasyJEE 2023
- 19In the given circuit, rms value of current (I_rms) through the resistor R is:MCQEasyJEE 2023
- 20An inductor of 0.5 mH, a capacitor of 20 μF, and resistance of 20 Ω are connected in series with a 220 V AC source. If the current is in…NVAEasyJEE 2023
- 21A series LCR circuit consists of R = 80 Ω, X_L = 100 Ω, and X_C = 40 Ω. The input voltage is 2500 cos(100 π t) V. The amplitude of current,…NVAEasyJEE 2023
- 22A series LCR circuit is connected to an ac source of 220 V, 50 Hz. The circuit contains a resistance R = 100Ω and an inductor of inductive…MCQEasyJEE 2023
- 23An oscillating LC circuit consists of a 75 mH inductor and a 1.2 μF capacitor. If the maximum charge on the capacitor is 2.7 μC, the…NVAEasyJEE 2023
- 24Given below are two statements: Statement I: When the frequency of an a.c. source in a series LCR circuit increases, the current in the…MCQEasyJEE 2023
Frequently asked questions
Our bank has 24 previous-year JEE Physics questions tagged to LCR Circuits & Resonance, drawn from JEE papers between 2023 and 2026, including 3 from 2026 alone. Each comes with a full step-by-step solution.
LCR Circuits & Resonance is rated Advanced overall for JEE Physics. The PYQs on this page break down as 20 easy, 4 medium.
Of the 24 previous-year questions on LCR Circuits & Resonance, 12 are multiple-choice (MCQ) and 12 are numerical-value (NVA) questions.
Based on recent paper analysis, LCR Circuits & Resonance is worth about 2 marks in JEE Main. It sits in Electromagnetic Induction & Alternating Current, a Class 12 Physics chapter.
More Electromagnetic Induction & Alternating Current topics
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