Question 25 An isolated system consists of two conducting spheres A and B. Spher

Question

Question 25


An isolated system consists of two conducting spheres A and B. Sphere A has five times the radius of sphere B. Initially, the spheres are given equal amounts of positive charge and are isolated from each other. The two spheres are then connected by a conducting wire.
Note: The potential of a sphere of radius R that carries a charge Q is V = kQ/R, if the potential at infinity is zero.

Which one of the following statements is true after the spheres are connected by the wire?


The electric potential of A is 25 times larger than that of B.


The electric potential of A is 1/5 as large as that of B.


The electric potential of A is five times larger than that of B.


The electric potential of A is 1/25 as large as that of B.


The electric potential of A equals that of B.

Explanation / Answer

The electric potential of A equals that of B.

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