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Friday, 9 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 8 April 2024, Shift 1, Physics Q50

Question 50 of 90 in this shift, Physics question 20 of 30, Section A.

A LCR circuit is at resonance for a capacitor C, inductance L and resistance R. Now the value of resistance is halved keeping all other parameters same. The current amplitude at resonance will be now:
  1. (1)same
  2. (2)doubleOfficial answer
  3. (3)halved
  4. (4)Zero

Official answer

Option 2

NTA final key.

Chapter
Alternating Current
Topic
LCR Resonance
Idea tested
Resistance Effect on Resonance Curve

Same idea in other shifts

Asked 2× in all
  1. 18 Mar 2021, Shift 1 · Q15In a series LCR resonance circuit, if we change the resistance only, from a lower to higher value :MediumSingle correct

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.