272. Problem 22.7E (HRW) Identical isolated spheres 1 and 2 have
equal amounts of charge and are separated by a distance large compared with
their diameters. The electrostatic force on sphere 2 due to sphere 1
is
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Solution: Click For PDF Version Let initially the equal charge on identical conducting spheres 1 and 2 be q. By Coulomb’s law the magnitude of force F on 2 due to 1, if the separation d between the two charges which is assumed to be much greater than their size, will be When the identical conducting sphere 3 which is electrically neutral and is
held by an insulating handle is touched with conducting sphere 1, charge of
amount
Therefore, the magnitude of force on sphere 2 due to conducting sphere 1 by Coulomb’s law will be |