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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 2 April 2025, Shift 1, Physics Q37

Question 37 of 75 in this shift, Physics question 12 of 25, Section A.

Consider two infinitely large plane parallel conducting plates as shown below. The plates are uniformly charged with a surface charge density +σ+\sigma and −2σ-2\sigma. The force experienced by a point charge +q+q placed at the mid point between two plates will be :

The figure, in words

Two parallel large plates: left plate labelled +sigma, right plate labelled -2sigma, separated by distance d; point charge +q at the midpoint, distance d/2 from each plate.
  1. (1)3σq2ϵ0\frac{3\sigma q}{2\epsilon_0}Official answer
  2. (2)σq2ϵ0\frac{\sigma q}{2\epsilon_0}
  3. (3)3σq4ϵ0\frac{3\sigma q}{4\epsilon_0}
  4. (4)σq4ϵ0\frac{\sigma q}{4\epsilon_0}

Official answer

Option 1

NTA final key.

Chapter
Electric Charges and Fields
Topic
Electric Field
Idea tested
Field of Two Parallel Sheets

Same topic in other shifts

All Electric Field questions
  1. 6 Apr 2026, Shift 1 · Q38A thin half ring of radius 35 cm is uniformly charged with a total charge of QQ coulomb. If the magnitude of the electric field at centre…MediumSingle correct
  2. 6 Apr 2026, Shift 1 · Q49A three coulomb charge moves from the point (0,−2,−5)(0,-2,-5) to the point (5,1,2)(5,1,2) in an electric field expressed as…MediumNumerical value
  3. 2 Apr 2025, Shift 2 · Q44Consider a circular loop that is uniformly charged and has a radius a2a\sqrt{2}. Find the position along the positive zz-axis of the…MediumSingle correct
  4. 4 Apr 2025, Shift 2 · Q38A metallic ring is uniformly charged as shown in figure. AC and BD are two mutually perpendicular diameters. Electric field due to arc AB…MediumDiagram basedHas a figure
  5. 29 Jan 2024, Shift 1 · Q55An electron is moving under the influence of the electric field of a uniformly charged infinite plane sheet S having surface charge…HardNumerical value
  6. 31 Jan 2024, Shift 1 · Q40Two charges qq and 3q3q are separated by a distance 'r ' in air. At a distance xx from charge qq, the resultant electric field is zero.…EasySingle 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.