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Discussion :: Electromagnetic Field Thoery

  1. If the electric field intensity associated with a uniform plane electromagnetic wave travelling in a perfect dielectric medium is given by
    E(z, t) = 10 cos (2p x 107t - 0.1 pz) volt/metre, then the velocity of the travelling wave is

    2. A.
    3.0 x 108 m/sec
    B.
    2 x 108 m/sec
    C.
    6.28 x 107 m/sec
    D.
    2 x 107 m/sec

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    Answer : Option B

    Explanation :

    E(z, t) = 10 cos (2p x 107t - 0.1 pz)

    f = 107 Hz, β = 0.1p

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