JEE Main 2021 — Current Electricity Question with Solution
From: JEE Main 2021 (Online) 17th March Morning Shift
Question
A current of 10A exists in a wire of cross-sectional area of 5 mm2 with a drift velocity of 2 103 ms1. The number of free electrons in each cubic meter of the wire is ___________.
Choose an option
Show full solutionCorrect option: A
Correct answer
A625 1025
Step-by-step explanation
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This is a previous-year question from JEE Main 2021, covering the Current Electricity 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.