(a) Two identical metal spheres A and B are in contact. Both are initially neutral. 1.0 * 1012 electrons are added to sphere A, then the two spheres are separated. Afterward, what are the charge of A and the charge of B? (b) Two identical metal spheres A and B are connected by a plastic rod. Both are initially neutral. 1.0 * 1012 electrons are added to sphere A, then the connecting rod is removed. Afterward, what are the charge of A and the charge of B?
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