Question
Physics Question on Capacitors and Capacitance
If the electrical potential at a point on the surface of a hollow conducting sphere of radius R is V, then the electric potential at a point which is at a distance R/3 from the centre of the sphere is:
A
V
B
V/3
C
V/9
D
3V
Answer
V
Explanation
Solution
The correct option is: (A) V.
Inside a hollow conducting sphere, the electric field is zero due to the property of conductors in electrostatic equilibrium. This means that the electric potential is constant throughout the interior of the sphere. Therefore, regardless of the distance from the center within the sphere, the electric potential remains the same as the potential at its surface, which is V.
Thus, the electric potential at a point which is at a distance R /3 from the center of the sphere is indeed V.