J & K CET Medical J & K - CET Medical Solved Paper-2012

  • question_answer
    What are the dimensions of electrical conductivity?

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

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

    C)  \[[{{M}^{-1}}{{L}^{-2}}{{T}^{3}}{{I}^{2}}]\]

    D)  \[[{{M}^{-1}}{{L}^{-3}}{{T}^{3}}I]\]

    Correct Answer: C

    Solution :

     \[Conductivity=\frac{Length}{Resistance\times Area}\] \[=\frac{[L]}{[M{{L}^{2}}{{T}^{-3}}{{I}^{-2}}][{{L}^{2}}]}\] \[=[{{M}^{-1}}{{L}^{-3}}{{T}^{3}}{{I}^{2}}]\]


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