# 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.

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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.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Conservation of Charge concept. You can view video lessons to learn Conservation of Charge. Or if you need more Conservation of Charge practice, you can also practice Conservation of Charge practice problems.

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Based on our data, we think this problem is relevant for Professor Downer's class at TEXAS.