12th Class Physics Sample Paper Physics Olympiad Sample Paper-3

  • 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)  \[2\times {{10}^{6}}N\]

    Correct Answer: A

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