Physics · 2022
JEE Main · 28 July 2022, Shift 1 · Q41
A wire of resistance R_1 is drawn out so that its length is increased by twice of its original length. The ratio of new resistance to original…
A wire of resistance $\displaystyle R_1$ is drawn out so that its length is increased by twice of its original length. The ratio of new resistance to original resistance is :
Official answer
(1)
$\displaystyle 9$ : $\displaystyle 1$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.