JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 25 July 2022, Shift 1, Physics Q42

Question 42 of 90 in this shift, Physics question 12 of 30, Section A.

To increase the resonant frequency in series LCR circuit,

(1)source frequency should be increased.
(2)another resistance should be added in series with the first resistance.
(3)another capacitor should be added in series with the first capacitor.Official answer
(4)the source frequency should be decreased.

Official answer

Option 3

NTA final key (2022 Session 2).

Chapter: Alternating Current
Topic: LCR Resonance
Idea tested: Resonant Frequency Calculation

Same idea in other shifts

Asked 3× in all

5 Apr 2026, Shift 2 · Q48A series LCR circuit with $R=20\ \Omega$ , $L=1.6$ H and $C=40\ \mu\mathrm{F}$ is connected to a variable frequency a.c. source. The…EasyNumerical value
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

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. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.