JEE Main 2022 — Current Electricity Question with Solution
From: JEE Main 2022 (Online) 29th July Evening Shift
Question
A long wire is broken into two unequal parts and . The part of the wire is streched into another wire W. Length of is twice the length of and the resistance of is twice that of . Find the ratio of length of and .
Choose an option
Show full solutionCorrect option: B
Correct answer
B1 : 2
Step-by-step explanation
When wire is stretched to double of its length, then resistance becomes 4 times
So.
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This is a previous-year question from JEE Main 2022, 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.