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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 8 April 2023, Shift 2, Physics Q50

Question 50 of 90 in this shift, Physics question 20 of 30, Section A.

The equivalent resistance between A and B as shown in figure is:

The figure, in words

Terminal A, then 20 kΩ resistor to node C, then a second 20 kΩ resistor to node D, then a 10 kΩ resistor to terminal B. A wire runs from the left of the first 20 kΩ resistor (A side) over the top to node D (before the 10 kΩ), and a wire runs from node C down and across the bottom to the B side after the 10 kΩ resistor
  1. (1)5 kΩ5\ \mathrm{k\Omega}Official answer
  2. (2)10 kΩ10\ \mathrm{k\Omega}
  3. (3)20 kΩ20\ \mathrm{k\Omega}
  4. (4)30 kΩ30\ \mathrm{k\Omega}

Official answer

Option 1

NTA final key.

Chapter
Current Electricity
Topic
Kirchhoff's Laws
Idea tested
Short Circuits and Equipotential Nodes

Same idea in other shifts

Asked 3× in all
  1. 29 Jul 2022, Shift 1 · Q55The current I flowing through the given circuit will be __________ A.MediumNumerical valueHas a figure
  2. 31 Aug 2021, Shift 2 · Q9The equivalent resistance of the given circuit between the terminals A and B is :MediumDiagram 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.