AMU Medical AMU Solved Paper-2008

  • question_answer
    In an electromagnetic wave, the electric and magnetising fields are 100 V/m a 0.265 V/m The maximum energy flow is

    A) \[\text{26}.\text{5 W}/{{\text{m}}^{\text{2}}}\]                              

    B)  \[\text{36}.\text{5 W}/{{\text{m}}^{\text{2}}}\]

    C) \[\text{46}.\text{7 W}/{{\text{m}}^{\text{2}}}\]                              

    D)  \[\text{765 W}/{{\text{m}}^{\text{2}}}\]

    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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