JEE Main 2022 — Current Electricity Question with Solution
From: JEE Main 2022 (Online) 27th July Evening Shift
Question
(A) The drift velocity of electrons decreases with the increase in the temperature of conductor.
(B) The drift velocity is inversely proportional to the area of cross-section of given conductor.
(C) The drift velocity does not depend on the applied potential difference to the conductor.
(D) The drift velocity of electron is inversely proportional to the length of the conductor.
(E) The drift velocity increases with the increase in the temperature of conductor.
Choose the correct answer from the options given below :
Choose an option
Show full solutionCorrect option: B
Step-by-step explanation
We know, Resistivity
Where is relaxation time As temperature as ne
Statement (A) is correct and hence statement (E) is incorrect.
For a given is independent of . Hence, statement (B) is incorrect
Form above V statement (C) is also incorrect. Since as seen from above statement, so statement (D) is correct.
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This is a previous-year question from JEE Main 2022, 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.