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11. Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of...

11. Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of −2.0 μC; sphere B carries a charge of −6.0 μC; and sphere C carries a charge of +5.0 μC. 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?

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Answer #1

After A and B are touched and then separated they will each have a charge of -4 uC. After B and C are touched and then separated,
each will end up with +0.5 uC so C will have a deficiency of electrons and since each electron has a charge of 1.6x10^-19C, you can calculate the deficiency.

hence from here we have a deficiency of 3 x 10^12 electrons

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