Electricity and Magnetism Lecture III Kimal Honour Djam ASFA.

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Electricity and Magnetism Lecture III Kimal Honour Djam ASFA

Two uncharged, conducting spheres, A and B, are held at rest on insulating stands and are in contact. A positively charged rod is brought near sphere A as suggested in the figure. While the rod is in place, someone moves sphere B away from A. How will the spheres be charged, if at all?

Two positive point charges Q and 2Q are separated by a distance R. If the charge Q experiences a force of magnitude F when the separation is R, what is the magnitude of the force on the charge 2Q when the separation is 2R ? A) F/4 B) F/2 C) F D) 2F E) 4F