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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceTwo statementsEasyConceptual

JEE Main 12 April 2023, Shift 1, Physics Q35

Question 35 of 90 in this shift, Physics question 5 of 30, Section A.

Given below are two statements: Statement I : When the frequency of an a.c source in a series LCR circuit increases, the current in the circuit first increases, attains a maximum value and then decreases. Statement II : In a series LCR circuit, the value of power factor at resonance is one. In the light of given statements, choose the most appropriate answer from the options given below.
  1. (1)Both Statement I and Statement II are true.Official answer
  2. (2)Both Statement I and Statement II are False.
  3. (3)Statement I is correct but Statement II is false.
  4. (4)Statement I is incorrect but Statement II is true.

Official answer

Option 1

NTA final key.

Chapter
Alternating Current
Topic
LCR Resonance
Idea tested
Power Factor at Resonance

Same idea in other shifts

Asked 4× in all
  1. 10 Apr 2023, Shift 1 · Q45Given below are two statements : Statement I : Maximum power is dissipated in a circuit containing an inductor, a capacitor and a resistor…EasyTwo statements
  2. 30 Jun 2022, Shift 1 · Q57A series LCR circuit with R = 25011\frac{250}{11} Ω\Omega and XL\mathrm{X_L} = 7011\frac{70}{11} Ω\Omega is connected across a 220 V, 50 Hz…MediumNumerical value
  3. 24 Feb 2021, Shift 2 · Q28A series LCR circuit is designed to resonate at an angular frequency ω0=105 rad/s\omega_0 = 10^5\ \mathrm{rad/s}. The circuit draws 16 W power from…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 108 of the 174 JEE Main shifts held from 2017 to 2026.