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Friday, 9 October

JEE Main 2022 · PhysicsMultiple choiceOtherEasyData or graph

JEE Main 29 June 2022, Shift 1, Physics Q40

Question 40 of 90 in this shift, Physics question 10 of 30, Section A.

For a series LCR circuit, I vs ω\omega curve is shown : (a) To the left of ωr\omega_r, the circuit is mainly capacitive. (b) To the left of ωr\omega_r, the circuit is mainly inductive. (c) At ωr\omega_r, impedance of the circuit is equal to the resistance of the circuit. (d) At ωr\omega_r, impedance of the circuit is 0. Choose the most appropriate answer from the options given below :

The figure, in words

Graph of current I versus angular frequency omega: a bell-shaped resonance curve rising from a small nonzero value at omega=0, peaking at I_max at omega_r (marked by a dashed vertical line), then falling off.
  1. (1)(a) and (d) only
  2. (2)(b) and (d) only
  3. (3)(a) and (c) onlyOfficial answer
  4. (4)(b) and (c) only

Official answer

Option 3

NTA final key (2022 Session 1).

Chapter
Alternating Current
Topic
LCR Resonance
Idea tested
Series LCR Capacitive Below Resonance

Same topic in other shifts

All LCR Resonance questions
  1. 5 Apr 2026, Shift 2 · Q48A series LCR circuit with R=20 ΩR=20\ \Omega, L=1.6L=1.6 H and C=40 μFC=40\ \mu\mathrm{F} is connected to a variable frequency a.c. source. The…EasyNumerical value
  2. 6 Apr 2024, Shift 2 · Q59For a given series LCR circuit it is found that maximum current is drawn when value of variable capacitance is 2.5 nF. If resistance of…EasyNumerical value
  3. 8 Apr 2024, Shift 1 · Q50A LCR circuit is at resonance for a capacitor C, inductance L and resistance R. Now the value of resistance is halved keeping all other…EasySingle correct
  4. 29 Jan 2024, Shift 1 · Q43A capacitor of capacitance 100 μ100\ \muF is charged to a potential of 12 V and connected to a 6.4 mH inductor to produce oscillations. The…EasySingle correct
  5. 8 Apr 2023, Shift 2 · Q58A series combination of resistor of resistance 100 Ω\Omega, inductor of inductance 1 H and capacitor of capacitance 6.25 μ\muF is…EasyNumerical value
  6. 11 Apr 2023, Shift 1 · Q36As per the given graph, choose the correct representation for curve A and curve B. {Where XCX_C = reactance of pure capacitive circuit…EasyDiagram basedHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.