Two spheres of silver of same radii, one solid and the other hollow are charged to the same potential, then:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → both spheres will have same charge
Silver is a conductor, so in either sphere the charge resides only on the outer surface, and the potential of the sphere (outside and on its surface) is that of a point charge Q at the centre.
\( \displaystyle V = \frac{1}{4\pi\varepsilon_0}\frac{Q}{R} \Rightarrow Q = 4\pi\varepsilon_0RV \)
The charge depends only on the radius R and the potential V, not on whether the inside is solid or hollow. The radii and potentials are equal, so the charges are equal.
Option (4) is false because no charge can sit inside the material of a conductor in the static state.