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Friday, 9 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 9 April 2024, Shift 2, Physics Q42

Question 42 of 90 in this shift, Physics question 12 of 30, Section A.

Five charges +q+q, +5q+5q, −2q-2q, +3q+3q and −4q-4q are situated as shown in the figure. The electric flux due to this configuration through the surface SS is :

The figure, in words

Closed irregular surface S. Inside S: charges +5q, +q and -2q. Outside S: +3q (right of the surface) and -4q (left of the surface).
  1. (1)4qϵ0\frac{4q}{\epsilon_0}Official answer
  2. (2)5qϵ0\frac{5q}{\epsilon_0}
  3. (3)3qϵ0\frac{3q}{\epsilon_0}
  4. (4)qϵ0\frac{q}{\epsilon_0}

Official answer

Option 1

NTA final key.

Chapter
Electric Charges and Fields
Topic
Gauss's Law
Idea tested
Flux from External Charges

Same topic in other shifts

All Gauss's Law questions
  1. 2 Apr 2026, Shift 2 · Q40Two point charges 8 μ\muC and −2-2 μ\muC are located at x=2x = 2 cm and x=4x = 4 cm, respectively on the xx-axis. The ratio of electric…EasySingle correct
  2. 7 Apr 2025, Shift 2 · Q50The electric field in a region is given by E⃗=(2i^+4j^+6k^)×103\vec{E}=\left(2\hat{i}+4\hat{j}+6\hat{k}\right)\times10^3 N/C. The flux of the field through…EasyNumerical value
  3. 8 Apr 2025, Shift 2 · Q36An infinitely long wire has uniform linear charge density λ=2\lambda = 2 nC/m. The net flux through a Gaussian cube of side length…MediumSingle correct
  4. 8 Apr 2024, Shift 1 · Q55An electric field, E⃗=2i^+6j^+8k^6\vec{E}=\frac{2\hat{i}+6\hat{j}+8\hat{k}}{\sqrt{6}} passes through the surface of 4 m2^2 area having unit vector…EasyNumerical value
  5. 29 Jan 2024, Shift 1 · Q40Two charges of 5Q5Q and −2Q-2Q are situated at the points (3a,0)(3a, 0) and (−5a,0)(-5a, 0) respectively. The electric flux through a sphere of…EasySingle correct
  6. 30 Jan 2024, Shift 2 · Q40A particle of charge '−q-q' and mass 'mm' moves in a circle of radius 'rr' around an infinitely long line charge of linear charge…MediumSingle correct

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 42 of the 174 JEE Main shifts held from 2017 to 2026.