Are they conductors? What do you know the potential of a conducting body? inside, outside any point?I have found the answer of this question in a google book as
ANSWER:Because the potential difference between solid sphere and hollow shell depends on the radii of two spheres and charge on the inner sphere.Since the two values have not changed therefore potential difference does not change.
I want to ask
that the answer mentions the potential difference between solid sphere and hollow shell
but the question asks potential difference between
surface of the solid sphere and that of the outer surface of the hollow shell
Are both same?