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Suppose that the electric field part of ...

Suppose that the electric field part of an electromagnetic wave in vacuum is `vec(E )={(3.1 N//C)cos [(1.8 rad//m)y+(5.4xx10^(6)rad//s)]}hat(i)`
What is the direction of propagation ?

Text Solution

Verified by Experts

(a) `-hat j`
(b) 3.5m,
(c ) 86 MHz,
(d) 100 nT,
`{(100 nT) cos [(1.8" rad/m")y+(5.4xx10^(6)" rad/s")t]} hat K`
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Knowledge Check

  • Formula for velocity of electromagnetic wave in vacuum (C ) is …..

    A
    `sqrt(mu_(0)epsilon_(0))`
    B
    `(1)/(sqrt(mu_(0)epsilon_(0)))`
    C
    `sqrt((epsilon_(0))/(mu_(0)))`
    D
    `sqrt((mu_(0))/(epsilon_(0)))`

  • Speed of electromagnetic wave in a medium of in_(r )=1.3 and mu_(r )=2.14 is ……. .

    A
    `3.6xx10^(8)m//s`
    B
    `1.8xx10^(8)m//s`
    C
    `1.8xx10^(6)m//s`
    D
    `13.6xx10^(6)m//s`

  • Electric field in one electromagnetic wave, propagating in vacuum is E=40 cos(kz - 6xx10^(8)t)hat(i) (where all the values are in SI units). Then value of wave vector of this wave is ……. .

    A
    `2m^(-1)`
    B
    `0.5 m^(-1)`
    C
    `6 m^(-1)`
    D
    `3m^(-1)`

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