JEE Main 2021 — Current Electricity Question with Solution
From: JEE Main 2021 (Online) 27th July Evening Shift
Question
The resistance of a conductor at 15C is 16 and at 100C is 20. What will be the temperature coefficient of resistance of the conductor?
Choose an option
Show full solutionCorrect option: C
Correct answer
C0.003C1
Step-by-step explanation
16 = R0 [1 + (15 T0)]
20 = R0 [1 + (100 T0)]
Assuming T0 = 0C, as a general convention.
= 0.003C1
20 = R0 [1 + (100 T0)]
Assuming T0 = 0C, as a general convention.
= 0.003C1
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This is a previous-year question from JEE Main 2021, 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.