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NEET Sample Paper NEET Sample Test Paper-93

  • question_answer
    The point charges \[Q\] and \[-2Q\] are placed at some distance apart. If the electric field at the location of\[Q\] is \[E.\] Then, the electric field at the location of \[-2Q\] will be

    A) \[-\frac{3E}{2}\]           

    B) \[-E\]

    C) \[-\frac{E}{2}\]                         

    D) \[-2E\]

    Correct Answer: C

    Solution :

    [c] Field at Q is E. So, force on \[Q=QE\] This force will be applied on \[-2Q.\] Also according to Coulomb's law. So, field at \[-2Q\] is \[\frac{QE}{-2Q}=-\frac{E}{2}.\]


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