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JEE Main & Advanced Physics Mathematical Tools, Units & Dimensions Question Bank Self Evaluation Test - Physical World, Units and Measurements

  • question_answer
    Dimensions of 'resistance' are same as (where h is Planck's constant and e is charge)

    A)  \[\frac{h}{e}\]

    B)  \[\frac{{{h}^{2}}}{e}\]

    C)  \[\frac{h}{{{e}^{2}}}\]

    D)  \[\frac{{{h}^{2}}}{{{e}^{2}}}\]

    Correct Answer: C

    Solution :

    [c] \[\frac{h}{{{e}^{2}}}=\frac{M{{L}^{2}}{{T}^{-1}}}{{{(AT)}^{2}}}=M{{L}^{2}}{{T}^{-3}}{{A}^{-2}}\] = Resistance (ohm)


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