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Saturday, 31 October

JEE Main · Physics · Magnetism and Matter

Work done in rotating a dipole

JEE Main asked Work done in rotating a dipole 5 times in 5 of the 108 shifts Lumi analysed, in 2020, 2022 and 2024. It belongs to Magnetic Dipole Moment, in Magnetism and Matter (Physics). The longest wait between two years asking it was 2 years. In 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
5
in 5 shifts
Years
3 of 8
First asked
2020
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2022 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170.08’200’210.03’220’230.14’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 3 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
  • 20243 of 18
  • 20230 of 12
  • 20221 of 24
  • 20210 of 24
  • 20201 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: calculation.

  • Work in turning current coil in field
  • Work to rotate coil in field

Difficulty

Easy 4Medium 1Hard 0

2 of the 5 questions had a numerical answer.

Every question

All 5 questions

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

  1. 6 Apr 2024, Shift 2 · Q58A coil having 100 turns, area of 5×10−3 m25\times10^{-3}\ \mathrm{m^2}, carrying current of 1 mA is placed in uniform magnetic field of 0.20 T…EasyNumerical value
  2. 6 Apr 2024, Shift 1 · Q57A circular coil having 200 turns, 2.5×10−42.5\times10^{-4} m2^2 area and carrying 100 μ\muA current is placed in a uniform magnetic field of…EasyNumerical value
  3. 4 Apr 2024, Shift 2 · Q43The magnetic moment of a bar magnet is 0.5 Am2^2. It is suspended in a uniform magnetic field of 8×10−28\times10^{-2}T. The work done in…EasySingle correct
  4. 26 Jun 2022, Shift 2 · Q42A bar magnet having a magnetic moment of 2.0×105 JT−12.0 \times 10^{5}\ JT^{-1}, is placed along the direction of uniform magnetic field of…EasySingle correct
  5. 4 Sep 2020, Shift 1 · Q14A small bar magnet placed with its axis at 30° with an external field of 0.06 T experiences a torque of 0.018 Nm. The minimum work…MediumSingle correct

Shifts: 4 Sep 2020, Shift 1, 26 Jun 2022, Shift 2, 4 Apr 2024, Shift 2, 6 Apr 2024, Shift 2, 6 Apr 2024, Shift 1.

Same topic

Other ideas in Magnetic Dipole Moment

Magnetic Dipole Moment has 20 ideas JEE Main has asked; 5 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas