Physics · 2024
JEE Main · 27 January 2024, Shift 2 · Q50
Wheatstone bridge principle is used to measure the specific resistance ( S_1) of given wire, having length L, radius r. If X is the resistance of…
Wheatstone bridge principle is used to measure the specific resistance $\displaystyle \left(\mathrm{S}_1\right)$ of given wire, having length L , radius r . If X is the resistance of wire, then specific resistance is $\displaystyle ; \mathrm{S}_1=\mathrm{X}\left(\frac{\pi \mathrm{r}^2}{\mathrm{~L}}\right)$. If the length of the wire gets doubled then the value of specific resistance will be :
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle \mathrm{S}_1$
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JEE Main 2024 Physics question, with the answer from NTA’s final answer key. Where our answers come from.