A thin spherical conducting shell of radius $R$ has a charge $q$. Another charge $Q$ is placed at the centre of the shell. The electrostatic potential at a point $p$ at distance $\frac{R}{2}$ from the centre of the shell is
A thin spherical conducting shell of radius $R$ has a charge $q$. Another charge $Q$ is placed at the centre of the shell. The electrostatic potential at a point $p$ at distance $\frac{R}{2}$ from the centre of the shell is
- [AIEEE 2003]
- A
$\frac{{(q + Q)}}{{4\pi {\varepsilon _0}}}\frac{2}{R}$
- B
$\frac{{2Q}}{{4\pi {\varepsilon _0}R}}$
- C
$\frac{{2Q}}{{4\pi {\varepsilon _0}R}} - \frac{{2q}}{{4\pi {\varepsilon _0}R}}$
- D
$\frac{{2Q}}{{4\pi {\varepsilon _0}R}} + \frac{q}{{4\pi {\varepsilon _0}R}}$
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