JEE Main · Physics · Alternating Current
RMS of DC and AC Superposition
JEE Main asked RMS of DC and AC Superposition 2 times in 2 of the 108 shifts Lumi analysed, in 2021 and 2025. It belongs to RMS and Peak Values, in Alternating Current (Physics). The longest wait between two years asking it was 4 years.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2021
- last in 2025
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021 and 2025. 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: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 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.
How JEE Main framed it
Numerical value is the usual form. Skill tested: calculation.
- Rms of current with dc offset
- Rms of alternating current with dc offset
Difficulty
1 of the 2 questions had a numerical answer.
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.
- 7 Apr 2025, Shift 1 · Q35An ac current is represented as Amp The r.m.s value of the current isEasySingle correct
- 27 Aug 2021, Shift 1 · Q28The alternating current is given by A The r.m.s. value…EasyNumerical value
Shifts: 27 Aug 2021, Shift 1, 7 Apr 2025, 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 Calculation via Integration2× · 2024
- Time from Zero to Peak2× · 2024
- AC Measuring Instruments2× · 2022
- Power Calculation using RMSonce · 2025
- Sinusoidal RMS-Peak Relationonce · 2025
- Ratio of AC to DC Heat Dissipationonce · 2022