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Saturday, 31 October

JEE Main · Physics · Electric Charges and Fields

Small Oscillations of a Displaced Charge

JEE Main asked Small Oscillations of a Displaced Charge 3 times in 3 of the 108 shifts Lumi analysed, in 2021 and 2022. It belongs to Coulomb's Law, in Electric Charges and Fields (Physics). The longest wait between two years asking it was 1 year. In 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
2 of 8
First asked
2021
last in 2022
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

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

00.050.10’170’200.07’210.03’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 1 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
  • 20221 of 24
  • 20212 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: multi-step.

  • Angular frequency of displaced charge shm
  • Time period of charge between two fixed charges

Difficulty

Easy 0Medium 3Hard 0

1 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.

  1. 27 Jul 2022, Shift 1 · Q40Two identical positive charges Q each are fixed at a distance of '2a' apart from each other. Another point charge q0_0 with mass 'm' is…MediumSingle correct
  2. 25 Jul 2021, Shift 1 · Q28A particle of mass 1 mg and charge q is lying at the mid-point of two stationary particles kept at a distance '2 m' when each is carrying…MediumNumerical value
  3. 24 Feb 2021, Shift 2 · Q10Two electrons each are fixed at a distance '2d'. A third charge proton placed at the midpoint is displaced slightly by a distance xx (…MediumSingle correct

Shifts: 24 Feb 2021, Shift 2, 25 Jul 2021, Shift 1, 27 Jul 2022, Shift 1.

Same topic

Other ideas in Coulomb's Law

Coulomb's Law has 15 ideas JEE Main has asked; 9 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas