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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 9 April 2024, Shift 1, Physics Q41

Question 41 of 90 in this shift, Physics question 11 of 30, Section A.

The equivalent resistance between A and B is :

The figure, in words

Resistor network on a square frame with terminals A and B at the top-left corner. Top-left 6 ohm, top-right 10 ohm, right side 5 ohm (upper) and 7 ohm (lower), bottom-right 8 ohm, bottom-left 11 ohm, left side 4 ohm (lower) and 8 ohm (upper). A vertical wire from the junction between the 6 and 10 ohm resistors to the junction between 11 and 8 ohm, and a horizontal wire from the left (between 8 and 4 ohm) to the right (between 5 and 7 ohm), crossing without connecting via a semicircular hop at the centre.
  1. (1)18 Ω18\ \Omega
  2. (2)25 Ω25\ \Omega
  3. (3)19 Ω19\ \OmegaOfficial answer
  4. (4)27 Ω27\ \Omega

Official answer

Option 3

NTA final key.

Chapter
Current Electricity
Topic
Kirchhoff's Laws
Idea tested
Identifying False Junctions

Same idea in other shifts

Asked 2× in all
  1. 4 Sep 2020, Shift 2 · Q20The value of current i1i_1 flowing from A to C in the circuit diagram 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.