Manipal Engineering Manipal Engineering Solved Paper-2012

  • question_answer
    In an electromagnetic wave, the electric and magnetizing fields are\[100\,\,V/m\]and\[0.265\,\,A/m\]. The maximum energy flow is

    A) \[26.5\,\,W/{{m}^{2}}\]               

    B) \[36.5\,\,W/{{m}^{2}}\]

    C) \[46.7\,\,W/{{m}^{2}}\]

    D)        \[765\,\,W/{{m}^{2}}\]

    Correct Answer: A

    Solution :

    Maximum rate of energy flow,\[S={{E}_{0}}\times {{H}_{0}}\] Given, \[{{E}_{0}}=100\,\,V/m\],\[{{H}_{0}}=0.265\,\,A/m\] \[\therefore \]  \[S=100\times 0.265=26.5\,\,W/{{m}^{2}}\]


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