JEE Main 2019 — Physics solution | Fundamenthol

JEE Main2019Physics

Q.

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 spheres will be:

A
$\frac{ρ}{4 π} (\frac{1}{a} - \frac{1}{b})$
B
$\frac{ρ}{2 π} (\frac{1}{a} - \frac{1}{b})$
C
$\frac{ρ}{2 π} (\frac{1}{a} + \frac{1}{b})$
D
$\frac{ρ}{4 π} (\frac{1}{a} + \frac{1}{b})$

Solution

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