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Saturday, 31 October

JEE Main 2021 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 4 August 2021, Shift 2, Physics Q27

Question 27 of 90 in this shift, Physics question 27 of 30, Section B.

As per the reported figure, the value of voltage across the terminals A B (i.e. VAB\mathrm{V_{AB}}) is _________ V during the proper flow of current.

The figure, in words

Circuit drawn as a rectangle with a middle vertical branch. Left side: a 100µF capacitor in the left vertical wire. Top wire, left to right: 5Ω resistor, then node A, then 8Ω resistor, then down the right side through a 0.5 H inductor. Middle branch from A down to node B: a 10Ω resistor. Bottom wire, left to right: a 5V battery (between the left corner and B), node B, then a 9V battery (between B and the right corner).

Official answer

5

NTA final key.

Chapter
Current Electricity
Topic
Kirchhoff's Laws
Idea tested
Steady-State Analysis of DC RC Circuits

Same idea in other shifts

Asked 6× in all
  1. 8 Apr 2026, Shift 2 · Q49The stored charge in the capacitor in steady state of the following circuit is ________ μ\muC.MediumNumerical valueHas a figure
  2. 27 Jan 2024, Shift 1 · Q56The charge accumulated on the capacitor connected in the following circuit is ________ μ\muC. (Given C = 150 μ\muF)MediumNumerical valueHas a figure
  3. 13 Apr 2023, Shift 2 · Q42In the network shown below, the charge accumulated in the capacitor in steady state will be:MediumSingle correctHas a figure
  4. 27 Jul 2022, Shift 2 · Q55As show in the figure, in steady state, the charge stored in the capacitor is ___________ ×10−6\times10^{-6} C.MediumNumerical valueHas a figure
  5. 2 Sep 2020, Shift 2 · Q24An ideal cell of emf 10 V is connected in circuit shown in figure. Each resistance is 2 Ω\Omega. The potential difference (in V) across…MediumNumerical valueHas 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.