JEE Main 2023 — Current Electricity Question with Solution
From: JEE Main 2023 (Online) 24th January Morning Shift
Question
A hollow cylindrical conductor has length of 3.14 m, while its inner and outer diameters are 4 mm and 8 mm respectively. The resistance of the conductor is . If the resistivity of the material is . The value of is ___________.
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Show full solutionCorrect answer: 2
Correct answer
2
Step-by-step explanation
Resistance of the hollow cylindrical conductor is given by,
where outer radius
where outer radius
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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.