JEE Main 2021 — Alternating Current Question with Solution
From: JEE Main 2021 (Online) 18th March Morning Shift
Question
An 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 :
Choose an option
Show full solutionCorrect option: A
Correct answer
A2.5 ms
Step-by-step explanation
t = = 2.5 ms
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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.