Physics · 2019
JEE Main · 10 April 2019, Shift 2 · Q17
Space between two concentric conducting spheres of radii a and b(b>a) is filled with a medium of resistivity ρ. The resistance between the two…
Space between two concentric conducting spheres of radii $\displaystyle a$ and $\displaystyle b(b>a)$ is filled with a medium of resistivity $\displaystyle \rho$. The resistance between the two spheres will be :
Official answer
(2)
$\displaystyle \frac{\rho}{4 \pi}\left(\frac{1}{a}-\frac{1}{b}\right)$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.