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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceTwo statementsEasyConceptual

JEE Main 10 April 2023, Shift 1, Physics Q45

Question 45 of 90 in this shift, Physics question 15 of 30, Section A.

Given below are two statements : Statement I : Maximum power is dissipated in a circuit containing an inductor, a capacitor and a resistor connected in series with an AC source, when resonance occurs Statement II : Maximum power is dissipated in a circuit containing pure resistor due to zero phase difference between current and voltage. In the light of the above statements, choose the correct answer from the options given below :
  1. (1)Both Statement I and Statement II are trueOfficial answer
  2. (2)Both Statement I and Statement II are false
  3. (3)Statement I is true but Statement II is false
  4. (4)Statement I is false 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. 12 Apr 2023, Shift 1 · Q35Given below are two statements: Statement I : When the frequency of an a.c source in a series LCR circuit increases, the current in the…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.