JEE Main 2015 — Current Electricity Question with Solution
From: JEE Main 2015 (Offline)
Question
When potential difference is applied across a wire of length the drift speed of electrons is If the electron density in the wire is the resistivity of the material is close to :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Here potential difference
length of wire
no. of electrons per unit volume of conductor.
no. of electrons
Placing the value of above parameters we get resistivity
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This is a previous-year question from JEE Main 2015, 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.