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Volume of a Hemisphere

A charge of ...

Question

A charge of $4 \times 10^{- 8} C$ is uniformly distributed over the surface of sphere of radius $1 c m$ . Another hollow sphere of radius $5 c m$ is concentric with the smaller sphere. Find the intensity of the electric field (in $N C^{- 1}$ ) at a distance $2 c m$ from the centre. $k = 9 \times 10^{- 9} S I$ .

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Solution

$9 \times 10^{3} N C$

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Volume of a Hemisphere

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