Physics Practice Problems Conservation of Charge Practice Problems Solution: Consider three identical metal spheres, A, B, and ...

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Solution: Consider three identical metal spheres, A, B, and C. Sphere A has a charge of -2μC; sphere B has a charge of -6μC; and sphere C has a charge of +4μC. Spheres A and B are touched together and then separated. Spheres B and C are then touched and separated. Does sphere C end up with an excess or a deficiency of electrons and how many electrons is it? A) deficiency, 6x1013 B) excess, 3x1013 C) excess, 2x1013 D) deficiency, 3x1012 E) There is no imbalance of electrons.

Problem

Consider three identical metal spheres, A, B, and C. Sphere A has a charge of -2μC; sphere B has a charge of -6μC; and sphere C has a charge of +4μC. Spheres A and B are touched together and then separated. Spheres B and C are then touched and separated. Does sphere C end up with an excess or a deficiency of electrons and how many electrons is it?

A) deficiency, 6x1013

B) excess, 3x1013

C) excess, 2x1013

D) deficiency, 3x1012

E) There is no imbalance of electrons.