question_answer

Two copper balls, each weighting 10 g are kept in air 10 cm apart. If one electron from every \[{{10}^{6}}\] atom is transferred from one ball to the other, the coulomb force between them is (atomic weight of copper is 63.5)

A)  \[2\times {{10}^{10}}N\]        

B)  \[2\times {{10}^{4}}N\]

C)  \[2\times {{10}^{8}}N\]          

D)  \[2\times {{10}^{6}}N\]