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Saturday, 31 October

JEE Main · Physics · Electrostatic Potential and Capacitance

Charge Sharing and Heat Loss

JEE Main asked Charge Sharing and Heat Loss 12 times in 12 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023, 2024 and 2025. It belongs to Parallel Plate Capacitors, in Electrostatic Potential and Capacitance (Physics). The longest wait between two years asking it was 1 year. In 2020, 2022, 2023 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
12
in 12 shifts
Years
6 of 8
First asked
2020
last in 2025
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2023, 2024 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.20.40’170.34’200.03’210.07’220.14’230.09’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 4 in 12 shifts · 2021: 1 in 24 shifts · 2022: 2 in 24 shifts · 2023: 2 in 12 shifts · 2024: 2 in 18 shifts · 2025: 1 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20251 of 8
  • 20242 of 18
  • 20232 of 12
  • 20222 of 24
  • 20211 of 24
  • 20204 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: calculation.

  • Capacitance from charge sharing
  • Energy lost in charge sharing

Difficulty

Easy 7Medium 5Hard 0

5 of the 12 questions had a numerical answer.

Every question

All 12 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 3 Apr 2025, Shift 2 · Q38Using a battery, a 100 pF capacitor is charged to 60 V and then the battery is removed. After that, a second uncharged capacitor is…EasySingle correct
  2. 30 Jan 2024, Shift 1 · Q55A capacitor of capacitance C and potential V has energy E. It is connected to another capacitor of capacitance 2 C and potential 2 V. Then…MediumNumerical value
  3. 1 Feb 2024, Shift 1 · Q40Two identical capacitors have same capacitance C. One of them is charged to the potential V and other to the potential 2V. The negative…MediumSingle correct
  4. 11 Apr 2023, Shift 1 · Q41A parallel plate capacitor of capacitance 2 F is charged to a potential V, The energy stored in the capacitor is E1E_1. The capacitor is…EasySingle correct
  5. 8 Apr 2023, Shift 2 · Q55A 600 pF capacitor is charged by 200 V supply. It is then disconnected from the supply and is connected to another uncharged 600 pF…MediumNumerical value
  6. 27 Jun 2022, Shift 1 · Q57A capacitor of capacitance 50 pF is charged by 100 V source. It is then connected to another uncharged identical capacitor. Electrostatic…EasyNumerical value
  7. 26 Jun 2022, Shift 1 · Q40Two capacitors having capacitance C1C_1 and C2C_2 respectively are connected as shown in figure. Initially, capacitor C1C_1 is charged to…EasyDiagram basedHas a figure
  8. 17 Mar 2021, Shift 2 · Q21A 2 μ\muF capacitor C1\mathrm{C_1} is first charged to a potential difference of 10 V using a battery. Then the battery is removed and…EasyNumerical valueHas a figure
  9. 5 Sep 2020, Shift 1 · Q12Two capacitors of capacitances C and 2C are charged to potential differences V and 2V, respectively. These are then connected in parallel…MediumSingle correct
  10. 4 Sep 2020, Shift 2 · Q12A capacitor C is fully charged with voltage V0V_0. After disconnecting the voltage source, it is connected in parallel with another…EasySingle correct
  11. 2 Sep 2020, Shift 2 · Q11A 10 μ\muF capacitor is fully charged to a potential difference of 50 V. After removing the source voltage it is connected to an…EasySingle correct
  12. 2 Sep 2020, Shift 1 · Q23A 5 μF5\ \mu\mathrm{F} capacitor is charged fully by a 220 V supply. It is then disconnected from the supply and is connected in series to…MediumNumerical value

Shifts: 2 Sep 2020, Shift 2, 2 Sep 2020, Shift 1, 4 Sep 2020, Shift 2, 5 Sep 2020, Shift 1, 17 Mar 2021, Shift 2, 26 Jun 2022, Shift 1, 27 Jun 2022, Shift 1, 8 Apr 2023, Shift 2, 11 Apr 2023, Shift 1, 30 Jan 2024, Shift 1, 1 Feb 2024, Shift 1, 3 Apr 2025, Shift 2.

Same topic

Other ideas in Parallel Plate Capacitors

Parallel Plate Capacitors has 14 ideas JEE Main has asked; 6 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas