Two copper spheres have the same radius. One of them is hollow and the other is solid. If they are charged to same potential, which sphere will hold a greater amount of charge?

Explanation

The capacitance of a hollow or of a solid sphere placed in air is proportional to its radius. In this example, the capacitances of both the spheres are equal. Again amount of charge = capacitance `xx` potential. So, if the two spheres are charged to the same potential, they will hold the same amount of charge.