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Physics - Capacitance

Practise 177 JEE Main previous year questions on Capacitance, compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Main tests.

Capacitance has been asked in 22 of the 25 years of JEE Main papers analysed (2002–2026), with 177 questions in all. 29% of them were easy, 46% moderate and 25% tough. Most of its questions came from 2022, with 25 questions that year. In the last three years (2024–2026) it had 38 questions across 49 papers, about 0.8 per paper.

The chapter's 5 topics are not weighted equally: Capacitors with Dielectric (54 questions, 31%), Grouping of capacitors (46 questions, 26%), and Charging and Discarging of capacitors (34 questions, 19%) have been asked the most. Capacitors with Dielectric has also led over the last five years, with 27 questions. Capacitors with Dielectric has produced the most tough questions (20).

  1. 1A parallel plate capacitor is having separation between plates mm. It has a capacitance of F when the space between the plates is filled wit08 Apr, 2026 (E)Capacitors with Dielectric
  2. 2A sphere of capacitance pF is charged to a potential of V. Another identical uncharged metal sphere is brought in contact with the charged s06 Apr, 2026 (E)Grouping of capacitors
  3. 3A parallel plate air capacitor is connected to a battery. The plates are pulled apart at uniform speed . If is the separation between the pl04 Apr, 2026 (M)Capacitance
  4. 4Consider a circuit consisting of a capacitor ( F), resistor ( ) and two identical diodes as shown in figure. The resistance of diode under f04 Apr, 2026 (M)Charging and Discarging of capacitors
  5. 5From the circuit given below, the capacitance between terminals and shown in the circuit is ______ F. (take F and F.)04 Apr, 2026 (E)Grouping of capacitors
  6. 6The dimensional formula of ( = permittivity of vacuum and = electric field) is . The value of _______.02 Apr, 2026 (M)Force and Energy stored in capacitor
  7. 7A parallel plate air capacitor has a capacitance . When it is half filled as show in figure with a dielectric constant , the percentage incr02 Apr, 2026 (M)Capacitors with Dielectric
  8. 8Identify the correct statements : A. Effective capacitance of a series combination of capacitors is always smaller than the smallest capacit28 Jan, 2026 (E)Capacitance
  9. 9Three parallel plate capacitors each with area and separation are filled with two dielectric ( and ) in the following fashion. Which of the 24 Jan, 2026 (E)Capacitors with Dielectric
  10. 10The space between the plates of a parallel plate capacitor of capacitance C (without any dielectric) is now filled with three dielectric sla23 Jan, 2026 (M)Capacitors with Dielectric
  11. 11A parallel plate capacitor with plate separation 5 mm is charged by a battery. On introducing a mica sheet of 2 mm and maintaining the conne23 Jan, 2026 (E)Capacitors with Dielectric
  12. 12A capacitor with capacitance is fully charged with a potential difference of 6.0 V and disconnected from the battery. The charged capacitor 22 Jan, 2026 (E)Grouping of capacitors
  13. 13A parallel plate capacitor has capacitance , when there is vacuum within the parallel plates. A sheet having thickness of the separation bet21 Jan, 2026 (M)Capacitors with Dielectric
  14. 14The charge stored by the capacitor in the given circuit in the steady state is .21 Jan, 2026 (E)Capacitance
  15. 15Space between the plates of a parallel plate capacitor of plate area and separation of (d) 1.77 mm, is filled with uniform dielectric materi08 Apr, 2025 (E)Grouping of capacitors
  16. 16A parallel plate capacitor has charge . A dielectric slab is inserted between the plates and almost fills the space between the plates. If t07 Apr, 2025 (E)Capacitors with Dielectric
  17. 17Four capacitor each of capacitance are connected as shown in the figure. The capacitance between points A and B is : ______ (in ).04 Apr, 2025 (M)Grouping of capacitors
  18. 18Three parallel plate capacitors and each of capacitance are connected as shown in figure. The effective capacitance between points A and B, 04 Apr, 2025 (E)Grouping of capacitors
  19. 19A parallel plate capacitor is filled equally (half) with two dielectrics of dielectric constant and , as shown in figures. The distance betw03 Apr, 2025 (M)Grouping of capacitors
  20. 20Using a battery, a 100 pF capacitor is charged to 60 V and then the battery is removed. After that, a second uncharged capacitor is connecte03 Apr, 2025 (E)Capacitance
  21. 21A capacitor, is charged to a potential difference of using a 5 V battery. The battery is removed and another capacitor, is inserted in place29 Jan, 2025 (E)Charging and Discarging of capacitors
  22. 22A parallel plate capacitor consisting of two circular plates of radius 10 cm is being charged by a constant current of 0.15 A . If the rate 29 Jan, 2025 (E)Force and Energy stored in capacitor
  23. 23Two capacitors and are connected in parallel to a battery. Charge-time graph is shown below for the two capacitors. The energy stored with t28 Jan, 2025 (M)Capacitance
  24. 24A parallel plate capacitor of capacitance is charged to a potential difference of 20 V . The distance between plates is . The energy density28 Jan, 2025 (E)Force and Energy stored in capacitor
  25. 25A parallel plate capacitor was made with two rectangular plates, each with a length of and breath of . The distance between the plates is . 24 Jan, 2025 (M)Capacitance
  26. 26Consider a parallel plate capacitor of area A (of each plate) and separation 'd' between the plates. If is the electric field and is the per24 Jan, 2025 (M)Force and Energy stored in capacitor
  27. 27Identify the valid statements relevant to the given circuit at the instant when the key is closed. A. There will be no current through resis23 Jan, 2025 (M)Charging and Discarging of capacitors
  28. 28A time varying potential difference is applied between the plates of a parallel plate capacitor of capacitance . The dielectric constant of 23 Jan, 2025 (E)Force and Energy stored in capacitor
  29. 29At steady state the charge on the capacitor, as shown in the circuit below, is .23 Jan, 2025 (E)Grouping of capacitors
  30. 30A parallel-plate capacitor of capacitance is connected to a 100 V power supply. Now the intermediate space between the plates is filled with22 Jan, 2025 (M)Capacitors with Dielectric
  31. 31A bulb and a capacitor are connected in series across an ac supply. A dielectric is then placed between the plates of the capacitor. The glo09 Apr, 2024 (M)Capacitors with Dielectric
  32. 32A capacitor is made of a flat plate of area A and a second plate having a stair-like structure as shown in figure. If the area of each stair09 Apr, 2024 (M)Grouping of capacitors
  33. 33A capacitor has air as dielectric medium and two conducting plates of area and they are apart. When a slab of dielectric having area and thi08 Apr, 2024 (E)Capacitors with Dielectric
  34. 34A capacitor of capacitance whose plates are separated by through air and each plate has area is now filled equally with two dielectric media06 Apr, 2024 (E)Capacitors with Dielectric
  35. 35Three capacitors of capacitances and are connected in parallel to a supply of . Energy stored in the above combination is E. When these capa05 Apr, 2024 (M)Force and Energy stored in capacitor
  36. 36The electric field between the two parallel plates of a capacitor of capacitance drops to one third of its initial value in when the plates 05 Apr, 2024 (M)Charging and Discarging of capacitors
  37. 37A parallel plate capacitor of capacitance is charged by a battery connected between its plates to potential difference of . The battery is n04 Apr, 2024 (E)Capacitors with Dielectric
  38. 38Two identical capacitors have same capacitance C . One of them is charged to the potential V and other to the potential 2 V . The negative e01 Feb, 2024 (M)Charging and Discarging of capacitors
  39. 39A galvanometer G of 2 Ω resistance is connected in the given circuit. The ratio of charge stored in C 1 and C 2 is:01 Feb, 2024 (E)Grouping of capacitors
  40. 40In an electrical circuit drawn below the amount of charge stored in the capacitor is _______ μC .01 Feb, 2024 (E)Charging and Discarging of capacitors
  41. 41A parallel plate capacitor with plate separation 5 mm is charged up by a battery. It is found that on introducing a dielectric sheet of thic31 Jan, 2024 (M)Capacitors with Dielectric
  42. 42A capacitor of capacitance C and potential V has energy E . It is connected to another capacitor of capacitance 2 C and potential 2 V . Then30 Jan, 2024 (M)Force and Energy stored in capacitor
  43. 43A capacitor of capacitance 100 μF is charged to a potential of 12 V and connected to a 6 . 4 mH inductor to produce oscillations. The maximu29 Jan, 2024 (M)Charging and Discarging of capacitors
  44. 44A 16 Ω wire is bend to form a square loop. A 9 V battery with internal resistance 1 Ω is connected across one of its sides. If a 4 μF capaci29 Jan, 2024 (M)Charging and Discarging of capacitors
  45. 45The charge accumulated on the capacitor connected in the following circuit is ______ μC . (Given C = 150 μ F )27 Jan, 2024 (M)Charging and Discarging of capacitors
  46. 46In the given figure the total charge stored in the combination of capacitors is 100 C . The value of x is ______________.15 Apr, 2023 (M)Grouping of capacitors
  47. 47In the network shown below, the charge accumulated in the capacitor in steady state will be:13 Apr, 2023 (E)Capacitance
  48. 48In the circuit shown, the energy stored in the capacitor is n J . The value of n is _____.13 Apr, 2023 (E)Force and Energy stored in capacitor
  49. 49The electric field in an electromagnetic wave is given as E = 20 sin t - x c j N C - 1 , where and c are angular frequency and velocity of e11 Apr, 2023 (M)Force and Energy stored in capacitor
  50. 50A parallel plate capacitor of capacitance 2 F is charged to a potential V . The energy stored in the capacitor is E 1 . The capacitor is now11 Apr, 2023 (M)Charging and Discarging of capacitors

Frequently Asked Questions

1.How many questions are available for Capacitance?

This chapter includes 177 questions compiled from JEE Main papers spanning 2002 to 2026.

2.Are these questions only from JEE Main, or from other exams too?

These are JEE Main questions specifically for the Capacitance chapter. Questions from other exams like NTA Abhyas (JEE Main) or JEE Advanced are organised separately under their respective exam sections.

3.Is Capacitance an important chapter for JEE Main Physics?

Capacitance has appeared in 22 of the 25 years of JEE Main papers covered here, with 177 questions across 146 papers - about one per paper it appears in.

4.What is the difficulty level of Capacitance questions in JEE Main?

Of the 177 questions analysed for this chapter, 29% are easy, 46% moderate and 25% tough. 2022 had the most, with 25 questions.

5.Which topics in Capacitance should I focus on?

These topics have carried the most weightage in Capacitance:

  • Capacitors with Dielectric - 54 questions (31%)
  • Grouping of capacitors - 46 questions (26%)
  • Charging and Discarging of capacitors - 34 questions (19%)
  • Capacitors with Dielectric has produced the most tough questions (20).
6.Is Capacitance's weightage in JEE Main going up or down?

Across all 146 papers analysed, Capacitance has averaged about 1.2 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.8 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.