JEE Main 2021PhysicsAlternating CurrentMediumMCQ

JEE Main 2021Alternating Current Question with Solution

JEE Main 2021 (17 Mar Shift 1)

Question

An AC current is given by I=I1sinωt+I2cosωt.
A hot wire ammeter will give a reading:

Choose an option

Show full solutionCorrect option: B
Correct answer
BI12+I222

Step-by-step explanation

I=I1sinωt+I2cosωt

I0=I12+I22

Irms=I02=I12+I222

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About this question

This is a previous-year question from JEE Main 2021, covering the Alternating Current chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.