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Saturday, 31 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 28 June 2022, Shift 2, Physics Q54

Question 54 of 90 in this shift, Physics question 24 of 30, Section B.

In the given circuit, the magnitude of VL_L and VC_C are twice that of VR_R. Given that ff=50 Hz, the inductance of the coil is 1Kπ\frac{1}{K\pi} mH. The value of K is __________.

The figure, in words

Series circuit: an AC source labelled 220 V, 50 Hz, a resistor labelled 5 Ω (voltage V_R), a capacitor C (voltage V_C) and an inductor L (voltage V_L), all in one loop.

Official answer

0

NTA final key.

Chapter
Alternating Current
Topic
Phasor Diagrams
Idea tested
Series Phasor Addition

Same idea in other shifts

Asked 3× in all
  1. 29 Jul 2022, Shift 2 · Q38A circuit element X when connected to an a.c. supply of peak voltage 100 V gives a peak current of 5 A which is in phase with the voltage.…MediumSingle correct
  2. 25 Feb 2021, Shift 1 · Q17The angular frequency of alternating current in a L-C-R circuit is 100 rad/s. The components connected are shown in the figure. Find the…HardDiagram basedHas a figure

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.