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AP Physics 2
10.5 Electric Potential
10.2 Conservation of Electric Charge and the Process of Charging
IntermediateMCQConceptual20k
Two metallic conducting spheres, labeled A and B, sit on vertical insulated support rods fixed to flat horizontal rectangular bases. Sphere A on the left is drawn with a noticeably larger radius than Sphere B on the right. An arrow from the center of Sphere A to its outer edge is labeled R_A, and an arrow from the center of Sphere B to its outer edge is labeled R_B. A thin, horizontal wire bridges the gap between the top surfaces of the two spheres, physically connecting them. The entire apparatus is drawn in plain black lines against a plain white background. No other labels, lines, text, or axes appear.
Two conducting spheres connected by a thin wire.
Two isolated conducting spheres, \(A\) and \(B\), have radii \(R_A\) and \(R_B\) such that \(R_A > R_B\). Initially, Sphere \(A\) carries a net positive charge \(Q_0\) and Sphere \(B\) is uncharged. The two spheres are then connected by a thin, flexible conducting wire as shown and allowed to reach electrostatic equilibrium. Which of the following claims and justifications correctly describes the electric potentials \(V_A\) and \(V_B\) of the two spheres?

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