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Saturday, 31 October

JEE Main · Physics · Moving Charges and Magnetism

Field at center of circular arc

JEE Main asked Field at center of circular arc 8 times in 8 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023, 2024 and 2025. It belongs to Biot-Savart Law, in Moving Charges and Magnetism (Physics). The longest wait between two years asking it was 1 year. In 2022 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
8
in 8 shifts
Years
6 of 8
First asked
2020
last in 2025
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2023, 2024 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170.08’200.03’210.07’220.07’230.09’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 1 in 24 shifts · 2022: 2 in 24 shifts · 2023: 1 in 12 shifts · 2024: 2 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
  • 20242 of 18
  • 20231 of 12
  • 20222 of 24
  • 20211 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Diagram based is the usual form. Skill tested: multi-step.

  • Field at centre of concentric semicircles
  • Net field at centre of perpendicular coils

Difficulty

Easy 1Medium 7Hard 0

3 of the 8 questions had a numerical answer.

Every question

All 8 questions

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

  1. 3 Apr 2025, Shift 1 · Q48A loop ABCDA, carrying current I=12\mathrm{I} = 12 A, is placed in a plane, consists of two semi-circular segments of radius…MediumNumerical valueHas a figure
  2. 31 Jan 2024, Shift 2 · Q57Two circular coils PP and QQ of 100 turns each have same radius of π\pi cm. The currents in PP and RR are 1A1A and 2A2A respectively.…MediumNumerical value
  3. 30 Jan 2024, Shift 1 · Q42Two insulated circular loop A and B of radius 'a' carrying a current of 'I' in the anti clockwise direction as shown in the figure. The…MediumDiagram basedHas a figure
  4. 10 Apr 2023, Shift 2 · Q59A straight wire carrying a current of 14 A is bent into a semicircular arc of radius 2.2 cm as shown in the figure. The magnetic field…MediumNumerical valueHas a figure
  5. 30 Jul 2022, Shift 2 · Q16In the following loop, magnitude of the magnetic field produced at the centre (O) of the loop is : (Assume AB and CD are infinitely…MediumSingle correctHas a figure
  6. 26 Jul 2022, Shift 1 · Q39BXB_X and BYB_Y are the magnetic fields at the centre of two coils X and Y respectively each carrying equal current. If coil X has 200…EasySingle correct
  7. 3 Aug 2021, Shift 1 · Q13A current I enters a circular coil of radius R, branches into two parts at A and then recombines at B (as shown in figure). The resultant…MediumDiagram basedHas a figure
  8. 4 Sep 2020, Shift 1 · Q13A wire A, bent in the shape of an arc of a circle, carrying a current of 2 A and having radius 2 cm and another wire B, also bent in the…MediumDiagram basedHas a figure

Shifts: 4 Sep 2020, Shift 1, 3 Aug 2021, Shift 1, 26 Jul 2022, Shift 1, 30 Jul 2022, Shift 2, 10 Apr 2023, Shift 2, 30 Jan 2024, Shift 1, 31 Jan 2024, Shift 2, 3 Apr 2025, Shift 1.

Same topic

Other ideas in Biot-Savart Law

Biot-Savart Law has 11 ideas JEE Main has asked; 9 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas