Two hollow conductors are charged positively. The potential of the smaller conductor is 50V and that of the larger conductor is 100V. How are these two conductors to be placed so that when connected by a wire, charges will flow from the smaller conductor to the larger one?

Explanation

We know that charges of a conductor reside on its outer surface. Placing the smaller conductor inside the bigger one and connecting them with, we can prepare a single conductor. Thus charges from the smaller conductor will then flow to the outer surface of the larger one.