JEE Main Physics · Electrostatic Potential and Capacitance

Dielectrics in JEE Main

Name: Dielectrics: JEE Main previous year questions
Creator: Lumi

Dielectrics (Physics, Electrostatic Potential and Capacitance) came 13 times in 13 of the 42 JEE Main shifts Lumi analysed, across 7 distinct ideas. 9 of them came in 2024–26; it was last asked in 2026.

Questions: 13; in 13 shifts
Ideas asked: 7; 3 asked more than once
Numerical answer: 7; 54% of its questions
Pattern: Asked most years; last asked 2026

Questions each year

In the shifts Lumi analysed for each year.

Difficulty and format

Easy 4Medium 7Hard 2

Format

Numerical value7 Q
Single correct4 Q
Diagram based1 Q
Assertion–reason1 Q

Ideas inside the topic

7 ideas

Partial and Multiple Slabs5 Q
Dielectric with Battery Connected2 Q
Capacitance with Full Slab2 Q
Induced Surface Charge Density1 Q
Leaky Dielectric as an RC Circuit1 Q
Polar vs. Non-Polar Dielectrics1 Q
Identifying Series vs Parallel Slab Configurations1 Q

Where it sits

Part of Electrostatic Potential and Capacitance, which had 48 questions in all. Dielectrics accounts for 27% of them. In Lumi's JEE taxonomy it belongs to Electrostatics.

Every question

All 13 Dielectrics questions

Newest first, each with its options and official answer.

2 Apr 2026, Shift 1 · Q32A parallel plate air capacitor has a capacitance C. When it is half filled as show in figure with a dielectric constant $K=5$ , the…EasySingle correctHas a figure
8 Apr 2026, Shift 2 · Q46A parallel plate capacitor is having separation between plates 0.885 mm. It has a capacitance of 1 $\mu$ F when the space between the…HardNumerical value
2 Apr 2025, Shift 2 · Q41Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Net dipole…EasyAssertion–reason
3 Apr 2025, Shift 1 · Q38A parallel plate capacitor is filled equally(half) with two dielectrics of dielectric constants $\epsilon_1$ and $\epsilon_2$ , as shown in…MediumDiagram basedHas a figure
4 Apr 2025, Shift 2 · Q35Three parallel plate capacitors $C_1$ , $C_2$ and $C_3$ each of capacitance 5 $\mu$ F are connected as shown in figure. The effective…EasySingle correctHas a figure
7 Apr 2025, Shift 2 · Q49A parallel plate capacitor has charge $5\times10^{-6}$ C. A dielectric slab is inserted between the plates and almost fills the space…MediumNumerical value
8 Apr 2025, Shift 2 · Q49Space between the plates of a parallel plate capacitor of plate area 4 cm $^2$ and separation of (d) 1.77 mm, is filled with uniform…MediumNumerical valueHas a figure
6 Apr 2024, Shift 2 · Q52A capacitor of $10\ \mu\mathrm{F}$ capacitance whose plates are separated by 10 mm through air and each plate has area $4\ \mathrm{cm}^2$ …HardNumerical valueHas a figure
31 Jan 2024, Shift 1 · Q55A parallel plate capacitor with plate separation 5 mm is charged up by a battery. It is found that on introducing a dielectric sheet of…MediumNumerical value
6 Apr 2023, Shift 1 · Q56A parallel plate capacitor with plate area A and plate separation d is filled with a dielectric material of dielectric constant $K=4$ . The…MediumNumerical valueHas a figure
28 Jul 2022, Shift 1 · Q40Two capacitors, each having capacitance 40 $\mu$ F are connected in series. The space between one of the capacitors is filled with…MediumSingle correct
29 Jun 2022, Shift 1 · Q47A parallel plate capacitor filled with a medium of dielectric constant 10, is connected across a battery and is charged. The dielectric…EasySingle correct
18 Mar 2021, Shift 1 · Q29A parallel plate capacitor has plate area 100 m $^2$ and plate separation of 10 m. The space between the plates is filled up to a thickness…MediumNumerical value