JEE Main 2012 — Units and Dimensions Question with Solution
JEE Main 2012 (26 May Online)
Question
The electrical resistance of a conductor of length and area of cross section is given by where ' ' is the electrical resistivity. What is the dimensional formula for electrical conductivity ' ' which is reciprocal of resistivity?
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Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Dimensional formula for electrical resistivity, Dimensional formula for electrical conductivity, is
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This is a previous-year question from JEE Main 2012, covering the Units and Dimensions 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.