Find the resistance of a hollow sphere whose inner surface (radius :a) and outer surface (radius b) are connected to a p.d E( $ρ$ :resistivity)

\frac{ρ (b - a)}{4 π a b}

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\frac{ρ a b}{4 π (b - a)}

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\frac{ρ (b + a)}{4 π a b}

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\frac{ρ a b}{4 π (b + a)}

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Solution

The correct option is A $\frac{ρ (b - a)}{4 π a b}$

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Find the resistance of a hollow sphere whose inner surface (radius :a) and outer surface (radius b) are connected to a p.d E(ρ:resistivity)

The correct option is A ρ(b−a)4πab

Find the resistance of a hollow sphere whose inner surface (radius :a) and outer surface (radius b) are connected to a p.d E( $ρ$ :resistivity)

The correct option is A $\frac{ρ (b - a)}{4 π a b}$