Question
Physics Question on Electric charges and fields
A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. The potential at the centre of the sphere is.
A
zero
B
10 V
C
same as at a point 5 cm away from the surface
D
same as at a point 25 cm away from the surface
Answer
10 V
Explanation
Solution
Electric potential at any point inside a hollow metallic sphere is constant. Therefore, if potential at surface is 10 V, potential at centre will also be 10 V.