1.

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 a 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.            \[\frac{2Q}{4\pi {{\varepsilon }_{0}}R}+\frac{q}{4\pi {{\varepsilon }_{0}}R}\]
Answer» E.


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