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Saturday, 31 October

JEE Main · Physics · Moving Charges and Magnetism

Ideal Infinite Solenoid

JEE Main asked Ideal Infinite Solenoid 5 times in 5 of the 108 shifts Lumi analysed, in 2021, 2022, 2023 and 2024. It belongs to Ampere's Circuital Law, in Moving Charges and Magnetism (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
5
in 5 shifts
Years
4 of 8
First asked
2021
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022, 2023 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.050.10’170’200.07’210.03’220.07’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 in 12 shifts · 2024: 1 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
  • 20241 of 18
  • 20231 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: calculation.

  • Field in solenoid network
  • Number of turns from field inside solenoid

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. 5 Apr 2024, Shift 2 · Q57A solenoid of length 0.5 m has a radius of 1 cm and is made up of 'm' number of turns. It carries a current of 5 A. If the magnitude of…EasyNumerical value
  2. 8 Apr 2023, Shift 1 · Q58The magnetic intensity at the center of a long current carrying solenoid is found to be 1.6×103 Am−11.6\times10^3\ \mathrm{Am^{-1}}. If the number…EasyNumerical value
  3. 25 Jun 2022, Shift 2 · Q41A long solenoid carrying a current produces a magnetic field BB along its axis. If the current is doubled and the number of turns per cm…EasySingle correct
  4. 18 Mar 2021, Shift 1 · Q3Four identical long solenoids A, B, C and D are connected to each other as shown in the figure. If the magnetic field at the center of A…MediumSingle correctHas a figure
  5. 17 Mar 2021, Shift 1 · Q4A solenoid of 1000 turns per metre has a core with relative permeability 500. Insulated windings of the solenoid carry an electric current…EasySingle correct

Shifts: 17 Mar 2021, Shift 1, 18 Mar 2021, Shift 1, 25 Jun 2022, Shift 2, 8 Apr 2023, Shift 1, 5 Apr 2024, Shift 2.

Same topic

Other ideas in Ampere's Circuital Law

Ampere's Circuital Law has 8 ideas JEE Main has asked; 2 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas