JEE Main Physics · Alternating Current

RMS and Peak Values in JEE Main

Name: RMS and Peak Values: JEE Main previous year questions
Creator: Lumi

RMS and Peak Values (Physics, Alternating Current) came 6 times in 6 of the 42 JEE Main shifts Lumi analysed, across 5 distinct ideas. 4 of them came in 2024–26; it was last asked in 2025.

Questions: 6; in 6 shifts
Ideas asked: 5; 1 asked more than once
Numerical answer: 1; 17% of its questions
Pattern: Comes in cycles; last asked 2025

Questions each year

In the shifts Lumi analysed for each year.

Difficulty and format

Easy 5Medium 1Hard 0

Format

Single correct5 Q
Numerical value1 Q

Ideas inside the topic

5 ideas

Time from Peak to RMS2 Q
RMS of DC and AC Superposition1 Q
Power Calculation using RMS1 Q
Sinusoidal RMS-Peak Relation1 Q
Time from Zero to Peak1 Q

Where it sits

Part of Alternating Current, which had 37 questions in all. RMS and Peak Values accounts for 16% of them. In Lumi's JEE taxonomy it belongs to EMI and Alternating Current.

Every question

All 6 RMS and Peak Values questions

Newest first, each with its options and official answer.

3 Apr 2025, Shift 2 · Q37An electric bulb rated as 100W-220V is connected to an ac source of rms voltage 220V. The peak value of current through the bulb is :EasySingle correct
7 Apr 2025, Shift 1 · Q35An ac current is represented as $i = 5\sqrt{2} + 10\cos\left(650\pi t + \frac{\pi}{6}\right)$ Amp The r.m.s value of the current isEasySingle correct
7 Apr 2025, Shift 2 · Q48An inductor of reactance $100\ \Omega$ , a capacitor of reactance $50\ \Omega$ , and a resistor of resistance $50\ \Omega$ are connected in…EasyNumerical value
30 Jan 2024, Shift 2 · Q43An alternating voltage $V(t) = 220\sin 100\pi t$ volt is applied to a purely resistive load of $50\ \Omega$ . The time taken for the…MediumSingle correct
24 Jun 2022, Shift 1 · Q41A resistance of $40\ \Omega$ is connected to a source of alternating current rated 220 V, 50 Hz. Find the time taken by the current to…EasySingle correct
18 Mar 2021, Shift 1 · Q6An AC source rated 220 V, 50 Hz is connected to a resistor. The time taken by the current to change from its maximum to the rms value is :EasySingle correct