JEE Main 2023 — Current Electricity Question with Solution
From: JEE Main 2023 (Online) 31st January Morning Shift
Question
The drift velocity of electrons for a conductor connected in an electrical circuit is . The conductor in now replaced by another conductor with same material and same length but double the area of cross section. The applied voltage remains same. The new drift velocity of electrons will be
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Show full solutionCorrect option: B
Step-by-step explanation
As
We can write,
where, length of conductor,
is applied voltage
As drift velocity does not depends upon area, so it will remain same, even after changing area of conductor.
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This is a previous-year question from JEE Main 2023, 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.