Two copper balls, each weighing $10\,g$ are kept in air $10\, cm$ apart. If one electron from every ${10^6}$ atoms is transferred from one ball to the other, the coulomb force between them is (atomic weight of copper is $63.5$)
Two copper balls, each weighing $10\,g$ are kept in air $10\, cm$ apart. If one electron from every ${10^6}$ atoms is transferred from one ball to the other, the coulomb force between them is (atomic weight of copper is $63.5$)
- A
$2.0 \times {10^{10}}\,N$
- B
$2.0 \times {10^4}\,N$
- C
$2.0 \times {10^8}\,N$
- D
$2.0 \times {10^6}\,N$
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