J & K CET Engineering J and K - CET Engineering Solved Paper-2013

  • question_answer
    The dimensional formula of electric potential is

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

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

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

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

    Correct Answer: A

    Solution :

    From Ohm's law \[V-IR\] \[=[A.M{{L}^{2}}{{T}^{-3}}{{A}^{-2}}]=[M{{L}^{2}}{{T}^{-3}}{{A}^{-1}}]\]


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