Q: A smaller sphere has a potential of 50V, and a larger sphere has a potential of 100V. How should they be placed so that if they are connected with the help of a wire, the charge will flow from the smaller sphere to the larger sphere? Both spheres are conducting and hollow.  

Answer: A

In order for charge to flow from the smaller sphere to the larger sphere, the spheres should be placed concentrically, with the smaller sphere positioned inside the larger sphere. When connected with a wire, the charge will redistribute itself on the outer surfaces of both spheres, with some charge flowing from the smaller sphere to the larger sphere.

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