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Saturday, 31 October

JEE Main · Physics · Electromagnetic Induction

Magnetic Energy Density

JEE Main asked Magnetic Energy Density 2 times in 2 of the 108 shifts Lumi analysed, in 2022 and 2025. It belongs to Inductance, in Electromagnetic Induction (Physics). The longest wait between two years asking it was 3 years.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
2 of 8
First asked
2022
last in 2025
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2022 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170’200’210.03’220’230’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 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
  • 20221 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

Single correct is the usual form. Skill tested: application.

  • Magnetic energy stored in filled solenoid
  • Dimension of physical quantity from formula

Difficulty

Easy 1Medium 1Hard 0

Every question was multiple choice.

Every question

All 2 questions

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

  1. 2 Apr 2025, Shift 2 · Q43A solenoid having area AA and length ll is filled with a material having relative permeability 2. The magnetic energy stored in the…MediumSingle correct
  2. 28 Jul 2022, Shift 1 · Q31The dimensions of (B2μ0)\left(\frac{B^2}{\mu_0}\right) will be : (if μ0\mu_0 : permeability of free space and B : magnetic field)EasySingle correct

Shifts: 28 Jul 2022, Shift 1, 2 Apr 2025, Shift 2.

Same topic

Other ideas in Inductance

Inductance has 14 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas