Learn

Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 8 April 2024, Shift 2, Physics Q43

Question 43 of 90 in this shift, Physics question 13 of 30, Section A.

A coil of negligible resistance is connected in series with 90 Ω90\ \Omega resistor across 120120 V, 6060 Hz supply. A voltmeter reads 3636 V across resistance. Inductance of the coil is :
  1. (1)2.86 H
  2. (2)0.91 H
  3. (3)0.286 H
  4. (4)0.76 HOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Alternating Current
Topic
Phasor Diagrams
Idea tested
RL Series Phasor Construction

Same idea in other shifts

Asked 2× in all
  1. 4 Apr 2025, Shift 2 · Q48An inductor of self inductance 1 H is connected in series with a resistor of 100 π100\,\pi ohm and an ac supply of 100 π100\,\pi volt, 50 Hz.…MediumNumerical 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.