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Friday, 9 October

JEE Main 2026 · PhysicsNumerical answerNumerical valueHardMulti-step

JEE Main 8 April 2026, Shift 2, Physics Q46

Question 46 of 75 in this shift, Physics question 21 of 25, Section B.

A parallel plate capacitor is having separation between plates 0.885 mm. It has a capacitance of 1 μ\muF when the space between the plates is filled with an insulating material of resistivity 1×1013 Ω1 \times 10^{13}\ \Omegam and resistance 17.7×1014 Ω17.7 \times 10^{14}\ \Omega. Relative permittivity of the insulating material is α×107\alpha \times 10^7. The value of α\alpha is ________. (Take permittivity of free space =8.85×10−12= 8.85 \times 10^{-12} F/m)

Official answer

2

NTA final key.

Chapter
Electrostatic Potential and Capacitance
Topic
Dielectrics
Idea tested
Leaky Dielectric as an RC Circuit

Same topic in other shifts

All Dielectrics questions
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  3. 3 Apr 2025, Shift 1 · Q38A parallel plate capacitor is filled equally(half) with two dielectrics of dielectric constants ϵ1\epsilon_1 and ϵ2\epsilon_2, as shown in…MediumDiagram basedHas a figure
  4. 4 Apr 2025, Shift 2 · Q35Three parallel plate capacitors C1C_1, C2C_2 and C3C_3 each of capacitance 5 μ\muF are connected as shown in figure. The effective…EasySingle correctHas a figure
  5. 7 Apr 2025, Shift 2 · Q49A parallel plate capacitor has charge 5×10−65\times10^{-6} C. A dielectric slab is inserted between the plates and almost fills the space…MediumNumerical value
  6. 8 Apr 2025, Shift 2 · Q49Space between the plates of a parallel plate capacitor of plate area 4 cm2^2 and separation of (d) 1.77 mm, is filled with uniform…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. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.