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Saturday, 31 October

JEE Main · Physics · Electrostatic Potential and Capacitance

Action of Points and Corona Discharge

JEE Main asked Action of Points and Corona Discharge once in the 108 shifts Lumi analysed, on 8 Apr 2025, Shift 2. It belongs to Conductors in Fields, in Electrostatic Potential and Capacitance (Physics).

Updated 2026-10-24

Times asked
1
in 1 shift
Years
1 of 8
First asked
2025
the only year
Pattern
New since 2024
asked once so far

Questions on this idea a shift, by year

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

00.10.20’170’200’210’220’230’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 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
  • 20240 of 18
  • 20230 of 12
  • 20220 of 24
  • 20210 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Other is the usual form. Skill tested: conceptual.

  • Compare surface charge density on irregular conductor

Difficulty

Easy 1Medium 0Hard 0

The question was multiple choice.

Every question

The question

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

  1. 8 Apr 2025, Shift 2 · Q37Electric charge is transferred to an irregular metallic disk as shown in figure. If σ1\sigma_1, σ2\sigma_2, σ3\sigma_3 and σ4\sigma_4 are…EasyOtherHas a figure

Shift: 8 Apr 2025, Shift 2.

Same topic

Other ideas in Conductors in Fields

Conductors in Fields has 10 ideas JEE Main has asked; 3 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas