Physics · 2023
JEE Main · 6 April 2023, Shift 1 · Q55
The length of a metallic wire is increased by 20 % and its area of cross section is reduced by 4 %. The percentage change in resistance of the…
The length of a metallic wire is increased by $\displaystyle 20 \%$ and its area of cross section is reduced by $\displaystyle 4 \%$. The percentage change in resistance of the metallic wire is $\displaystyle \_\_\_\_$
Official answer
From NTA’s final answer key for this paper.
25
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.