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Saturday, 31 October

JEE Main · Physics · Moving Charges and Magnetism

Shunting Galvanometer for Protection

JEE Main asked Shunting Galvanometer for Protection 4 times in 4 of the 108 shifts Lumi analysed, in 2024 and 2026. It belongs to Wheatstone Bridge, in Moving Charges and Magnetism (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
4
in 4 shifts
Years
2 of 8
First asked
2024
last in 2026
Pattern
New since 2024
across the analysed shifts

Questions on this idea a shift, by year

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

00.10.20’170’200’210’220’230.14’240’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 3 in 18 shifts · 2025: 0 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20261 of 9
  • 20250 of 8
  • 20243 of 18
  • 20230 of 12
  • 20220 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: calculation.

  • Galvanometer resistance from shunt and series data
  • Shunt resistance to extend galvanometer range

Difficulty

Easy 2Medium 2Hard 0

1 of the 4 questions had a numerical answer.

Every question

All 4 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 2026, Shift 2 · Q48A moving coil of galvanometer when shunted with 2 Ω\Omega resistance gives a full scale deflection for a current of 500 mA. When a…MediumNumerical value
  2. 29 Jan 2024, Shift 1 · Q42A galvanometer having coil resistance 10 Ω10\,\Omega shows a full scale deflection for a current of 3mA. For it to measure a current of 8A,…EasySingle correct
  3. 9 Apr 2024, Shift 1 · Q50A galvanometer has a coil of resistance 200 Ω200\ \Omega with a full scale deflection at 20 μ20\ \muA. The value of resistance to be added to…EasySingle correct
  4. 5 Apr 2024, Shift 2 · Q46A galvanometer of resistance 100 Ω100\ \Omega when connected in series with 400 Ω400\ \Omega measures a voltage of upto 10 V. The value of…MediumSingle correct

Shifts: 29 Jan 2024, Shift 1, 5 Apr 2024, Shift 2, 9 Apr 2024, Shift 1, 6 Apr 2026, Shift 2.

Same topic

Other ideas in Wheatstone Bridge

Wheatstone Bridge has 12 ideas JEE Main has asked; 4 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas