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Question

(B) For a hollow metal sphere,the electric charge resides entirely on its outer surface.Inside the hollow sphere,the electric field is zero everywhere

Vedclass · Accepted Answer

$28.8 	imes 10^{-9} \ V$

Vedclass · Answer

(B) For a hollow metal sphere,the electric charge resides entirely on its outer surface.Inside the hollow sphere,the electric field is zero everywhere.Since the electric field is zero inside the sphere,the electric potential is constant throughout the interior and is equal to the potential at the surface.The potential at the surface (and thus at any point inside) is given by $V = \frac{kQ}{R}$,where $k = 9 	imes 10^9 \ N \cdot m^2/C^2$,$Q = 3.2 	imes 10^{-19} \ C$,and $R = 10 \ cm = 0.1 \ m$.Substituting the values: $V = \frac{9 	imes 10^9 	imes 3.2 	imes 10^{-19}}{0.1}$.$V = \frac{28.8 	imes 10^{-10}}{0.1} = 28.8 	imes 10^{-9} \ V$.

$A$ hollow metal sphere is charged with a charge of $3.2 \times 10^{-19} \ C$. If the radius of the sphere is $10 \ cm$,then the electric potential at a distance of $4 \ cm$ from its center will be:

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