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Saturday, 31 October

JEE Main · Physics · Electrostatic Potential and Capacitance

Field at Conductor Surface

JEE Main asked Field at Conductor Surface once in the 108 shifts Lumi analysed, on 3 Aug 2021, Shift 1. 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
2021
the only year
Pattern
Gone quiet
asked once so far

Questions on this idea a shift, by year

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

00.050.10’170’200.03’210’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 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.

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20230 of 12
  • 20220 of 24
  • 20211 of 24
  • 20200 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: application.

  • Ratio of surface fields of connected spheres

Difficulty

Easy 0Medium 1Hard 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. 3 Aug 2021, Shift 1 · Q11Two conducting spheres of radii 15 cmcm and 12 cmcm are charged and joined by a wire. The ratio of electric fields on the surfaces of the…MediumSingle correct

Shift: 3 Aug 2021, Shift 1.

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