J & K CET Medical J & K - CET Medical Solved Paper-2013

  • question_answer
    The net electric force on a charge of\[+3\mu C\]at the mid-point on the line joining two charges of magnitude\[+2\mu C\]and\[-2\mu C\]separated by the distance of 6 mm, is

    A)  6000 N            

    B)  500 N

    C)  60 N              

    D)  zero

    Correct Answer: D

    Solution :

     From Coulombs law Force due to same charge is repulsive and that due to opposite is attractive. \[F=K\left[ \frac{2\times 3}{{{3}^{2}}}-\frac{2\times 3}{{{3}^{2}}} \right]=0\]


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