Capacitor — JEE Main Previous Year Questions

How many JEE Main questions come from Capacitor?

Capacitor has contributed 155 questions to Joint Entrance Examination (Main) papers between 2016 and 2026 — an average of about 14 questions a year. That count is measured from EByAi’s bank of 55,289 JEE Main questions, not estimated from a syllabus. Every one of the 155 questions carries a written, step-by-step solution, and each is tagged to Capacitor within Physics, so you can drill this chapter across every year at once instead of hunting through paper PDFs. Practising a chapter’s full PYQ history is the fastest way to learn the patterns examiners reuse.

Sample Capacitor questions from real JEE Main papers

These are 5 real questions from the bank — exactly as asked, with the answer one tap away. All 155 Capacitor questions (with full written solutions) are available in practice.

1. Question 1 · JEE Main 2025

   A parallel plate capacitor of capacitance 1 µF is charged to a potential difference of 20 V. The distance between plates is 1 µm. The energy density between plates of capacitor is :
   1. (A)$1.8\times 10^3$ J/m^3
   2. (B)$2\times 10^2$ J/m^3
   3. (C)$2\times 10^{-4}$ J/m^3
   4. (D)$1.8\times 10^5$ J/m^3
   Show answerAnswer

   Answer: (A) $1.8\times 10^3$ J/m^3

2. Question 2 · JEE Main 2023

   Given below are two statements: One is labeled as Assertion A and the other is labeled as Reason R. Assertion A : Two metallic spheres are charged to the same potential. One of them is hollow and another is solid, and both have the same radii. Solid sphere will have lower charge than the hollow one. Reason R : Capacitance of metallic spheres depends on the radii of spheres. In light of the above statements, choose the correct answer from the options given below.
   1. (A)Both $\mathbf{A}$ and $\mathbf{R}$ are true but $\mathbf{R}$ is not the correct explanation of $\mathbf{A}$
   2. (B)Both $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$
   3. (C)$\mathbf{A}$ is false but $\mathbf{R}$ is true
   4. (D)$\mathbf{A}$ is true but $\mathbf{R}$ is false
   Show answerAnswer

   Answer: (C) $\mathbf{A}$ is false but $\mathbf{R}$ is true

3. Question 3 · JEE Main 2022

   If the charge on a capacitor is increased by 2 C, the energy stored in it increases by 44%. The original charge on the capacitor is (in C)
   1. (A)10
   2. (B)20
   3. (C)30
   4. (D)40
   Show answerAnswer

   Answer: (A) 10

4. Question 4 · JEE Main 2022

   A force of 10 N acts on a charged particle placed between two plates of a charged capacitor. If one plate of capacitor is removed, then the force acting on that particle will be.
   1. (A)5 N
   2. (B)10 N
   3. (C)20 N
   4. (D)Zero
   Show answerAnswer

   Answer: (A) 5 N

5. Question 5 · JEE Main 2022

   A parallel plate capacitor filled with a medium of dielectric constant 10, is connected across a battery and is charged. The dielectric slab is replaced by another slab of dielectric constant 15. Then the energy of capacitor will :
   1. (A)increase by 50%
   2. (B)decrease by 15%
   3. (C)increase by 25%
   4. (D)increase by 33%
   Show answerAnswer

   Answer: (A) increase by 50%

Capacitor questions by year

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