JEE Main · Physics · Electrostatic Potential and Capacitance
Dielectric with Battery Disconnected
JEE Main asked Dielectric with Battery Disconnected 3 times in 3 of the 108 shifts Lumi analysed, in 2021, 2022 and 2024. It belongs to Dielectrics, in Electrostatic Potential and Capacitance (Physics). The longest wait between two years asking it was 2 years.
Updated 2026-10-24
- Times asked
- 3
- in 3 shifts
- Years
- 3 of 8
- First asked
- 2021
- last in 2024
- Pattern
- Comes in cycles
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021, 2022 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 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.
How JEE Main framed it
Numerical value is the usual form. Skill tested: multi-step.
- Energy change on inserting dielectric after disconnecting battery
- Final potential after dielectric in parallel capacitors
Difficulty
3 of the 3 questions had a numerical answer.
Every question
All 3 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 4 Apr 2024, Shift 2 · Q60A parallel plate capacitor of capacitance 12.5 is charged by a battery connected between its plates to potential difference of 12.0…MediumNumerical value
- 25 Jul 2022, Shift 2 · Q58Two parallel plate capacitors of capacity C and 3C are connected in parallel combination and charged to a potential difference 18 V. The…MediumNumerical value
- 17 Mar 2021, Shift 1 · Q25A parallel plate capacitor whose capacitance C is 14 pF is charged by a battery to a potential difference V = 12 V between its plates. The…HardNumerical value
Shifts: 17 Mar 2021, Shift 1, 25 Jul 2022, Shift 2, 4 Apr 2024, Shift 2.
Same topic
Other ideas in Dielectrics
Dielectrics has 9 ideas JEE Main has asked; 6 of them came up in more than one question.
- Partial and Multiple Slabs10× · 2026
- Dielectric with Battery Connected3× · 2024
- Capacitance with Full Slab2× · 2025
- Induced Surface Charge Density2× · 2025
- Polar vs. Non-Polar Dielectrics2× · 2025
- Leaky Dielectric as an RC Circuitonce · 2026
- Identifying Series vs Parallel Slab Configurationsonce · 2025
- Leaky Dielectric and RC Equivalentonce · 2021