Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a
Chapter 21, Problem 2(choose chapter or problem)
Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with their diameters (Fig. 21-22a). The electrostatic force acting on sphere 2 due to sphere 1 is . Suppose now that a third identical sphere 3, having an insulating handle and initially neutral, is touched first to sphere 1 (Fig. 21-22b), then to sphere 2 (Fig. 21-22c), and finally removed (Fig. 21-22d). The electrostatic force that now acts on sphere 2 has magnitude F .What is the ratio F /F? (b )1 23(c )1 2(d)1 23FF' Figure 21-22 2.
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