JEE Main 2010 — Thermal Properties of Matter Question with Solution
JEE Main 2010
Question
Two conductors have the same resistance at but their temperature coefficients of resistance are and . The respective temperature coefficients of their series and parallel combinations are nearly
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Let be the initial resistance of both conductors At temperature their resistance will be, and
for, series combination,
where
or
for parallel combination,
where,
as and are small quantities
is negligible
or
as is negligible
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This is a previous-year question from JEE Main 2010, covering the Thermal Properties of Matter 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.