Two Identical Conducting Spheres a and B Carry Equal Charge

question 33

Multiple Choice

Two identical conducting spheres A and B carry equal charge and exert electrostatic forces of magnitude F on each other.They are separated by a distance much larger than their diameters.A third identical conducting sphere C is uncharged.Sphere C is first touched to A, then to B, and finally removed.As a result, the electrostatic force between A and B becomes:

• A)F/2
• B)F/4
• C)3F/8
• D)F/16
• E)0