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NEET Physics Mathematical Tools, Units & Dimensions Question Bank Dimensions

  • question_answer
    The dimensions of resistivity in terms of \[M,\,L,\,T\] and \[Q\] where \[Q\] stands for the dimensions of charge, is [MP PET 1993]

    A)             \[M{{L}^{3}}{{T}^{-1}}{{Q}^{-2}}\]

    B)             \[M{{L}^{3}}{{T}^{-2}}{{Q}^{-1}}\]

    C)             \[M{{L}^{2}}{{T}^{-1}}{{Q}^{-1}}\]

    D)             \[ML{{T}^{-1}}{{Q}^{-1}}\]

    Correct Answer: A

    Solution :

                    \[\rho =\frac{RA}{l}\]i.e. dimension of resistivity is \[[M{{L}^{3}}{{T}^{-1}}{{Q}^{-2}}]\]


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