A charge q is distributed uniformly on surface of a sphere of radius R . It is covered by a concentr

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2. Electric Potential and Capacitance

easy

A charge $q$ is distributed uniformly on the surface of a sphere of radius $R$. It is covered by a concentric hollow conducting sphere of radius $2 R$. Charge on the outer suiface of the hollow sphere will be, if it is earthed

A

$\frac{q}{2}$

B

$2 q$

C

$4 q$

D

Zero

Solution

(d)

If outer surface is earthed its charge becomes $0$ .

Standard 12

Physics

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