Coulomb's law forces between two-point chargesEasy
Electrostatic Force Between Conducting Spheres
A small uncharged conducting sphere is placed in contact with an identical sphere but having 4 × 10–8 C charge and then removed to a distance such that the force of repulsion between them is 9 × 10–3 N. The distance between them is (Take 
as 9 × 109 in SI units)
as 9 × 109 in SI units)SELECT ONE OPTION
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