JEE Main · Physics · Alternating Current
AC Measuring Instruments
JEE Main asked AC Measuring Instruments 2 times in 2 of the 108 shifts Lumi analysed, in 2021 and 2022. It belongs to RMS and Peak Values, in Alternating Current (Physics). The longest wait between two years asking it was 1 year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2021
- last in 2022
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021 and 2022. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 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.
How JEE Main framed it
Single correct is the usual form. Skill tested: calculation.
- Ammeter reading in pure inductor circuit
- Reading of hot wire ammeter for ac
Difficulty
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.
- 29 Jul 2022, Shift 1 · Q43An alternating emf is applied to a circuit containing an inductance of H. If an a.c. ammeter…EasySingle correct
- 17 Mar 2021, Shift 1 · Q7An AC current is given by . A hot wire ammeter will give a reading :EasySingle correct
Shifts: 17 Mar 2021, Shift 1, 29 Jul 2022, Shift 1.
Same topic
Other ideas in RMS and Peak Values
RMS and Peak Values has 8 ideas JEE Main has asked; 5 of them came up in more than one question.
- Time from Peak to RMS3× · 2022
- RMS of DC and AC Superposition2× · 2025
- RMS Calculation via Integration2× · 2024
- Time from Zero to Peak2× · 2024
- Power Calculation using RMSonce · 2025
- Sinusoidal RMS-Peak Relationonce · 2025
- Ratio of AC to DC Heat Dissipationonce · 2022