CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2008

  • question_answer
    If C is the capacitance and V is the potential, the dimensional formula for\[C{{V}^{2}}\]is

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

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

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

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

    E)  \[[M{{L}^{-1}}{{T}^{-1}}]\]

    Correct Answer: C

    Solution :

    \[[C]=[{{M}^{-1}}{{L}^{-2}}{{T}^{4}}{{A}^{2}}]\] \[[V]=[M{{L}^{2}}{{T}^{-3}}{{A}^{-1}}]\] \[\therefore \]  \[[C{{V}^{2}}]=[{{M}^{-1}}{{L}^{-2}}{{T}^{4}}{{A}^{2}}]{{[M{{L}^{2}}{{T}^{-3}}{{A}^{-1}}]}^{2}}\]                 \[=[M{{L}^{2}}{{T}^{-2}}]\]


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