JEE Main & Advanced Physics EM Waves Question Bank Self Evaluation Test - Electromagnetic Waves

  • question_answer
    In a wave \[{{E}_{0}}=100\,V{{m}^{-1}}\]. Find the magnitude of Pointing?s vector

    A) \[13.25\text{ }W{{m}^{-2}}\]

    B) \[26.5\text{ }W{{m}^{-2}}\]

    C) \[18.25\text{ }W{{m}^{-2}}\]

    D) \[19.7\text{ }W{{m}^{-2}}\]

    Correct Answer: B

    Solution :

    [b] \[\vec{s}=\frac{{{E}^{2}}}{C{{\mu }_{0}}}=26.5\,W{{m}^{-2}}\]


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