A hollow conducting sphere of radius \[R\] has a charge \[(+Q)\] on its surface. What is the electric potential within the sphere at a distance \[r=\frac{R}{3}\] from its centre [MP PMT 2001; UPSEAT 2001; MP PET 2001, 02; Orissa JEE 2005]

\[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{{{r}^{2}}}\]

\[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{r}\]

\[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{R}\]

A hollow conducting sphere of radius \[R\] has a charge \[(+Q)\] on it

1.	A hollow conducting sphere of radius \[R\] has a charge \[(+Q)\] on its surface. What is the electric potential within the sphere at a distance \[r=\frac{R}{3}\] from its centre [MP PMT 2001; UPSEAT 2001; MP PET 2001, 02; Orissa JEE 2005]
A.	Zero
B.	\[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{r}\]
C.	\[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{R}\]
D.	\[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{{{r}^{2}}}\]
Answer» D. \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{{{r}^{2}}}\]