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AIIMS AIIMS Solved Paper-2011

  • question_answer
    A charge Q is divided into two parts of q and Q - q. If the coulomb repulsion between them when they are separated is to be maximum, the ratio of \[R=5\Omega \] should be

    A)  2                            

    B)  1/2                       

    C)         4                                            

    D)  1/4

    Correct Answer: A

    Solution :

                    Let distance between two charges is x. The force between them. \[i=\frac{4\pi }{{{\mu }_{0}}}\frac{rH}{2\pi n}\] x is constant, so for maximum force \[=\frac{5\times {{10}^{-2}}\times 0.314\times {{10}^{-4}}}{{{10}^{-6}}\times 2\times 3.14\times 50}\]should be maximum. \[=5\times {{10}^{-2}}A\] \[=5\times {{10}^{-2}}A\] \[\lambda \]  \[\overset{0}{\mathop{A}}\,\]


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