Two small, identical conducting spheres A and B are adistance R apart; each carries the same charge Q. (a) Whatis the force sphere B exerts on sphere A? (b) An identicalsphere with zero charge, sphere C, makes contact withsphere B and is then moved very far away. What is the netforce now acting on sphere A? (c) Sphere C is brought backand now makes contact with sphere A and is then movedfar away. What is the force on sphere A in this third case?

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A: See below

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.