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How is the speed of Electromagnetic wave...

How is the speed of Electromagnetic waves in vacuum determined by the electric and magnetic fields?

Text Solution

Verified by Experts

Speed of Electromagnetic wave
`= ("Peak value of Electric field ")/("Peak value of magnetic field ")`
` c = (E_(0))/(B_(0))`
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Knowledge Check

  • The speed of electromagnetic waves in vacuum is given by ……………… .

    A
    `mu_0epsilon_0`
    B
    `sqrt(mu_0epsi_0)`
    C
    `1/(mu_0epsi_0)`
    D
    `1/(sqrt(mu_0epsi_0))`

  • Speed of electromagnetic waves through vacuum is equal to

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

  • The electromagnetic waves are ____ by electric and magnetic fields.

    A
    deflected
    B
    not deflected
    C
    oscillated
    D
    scanned

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    Which ray is not deflected by electric and magnetic fields?

    Can an electromagnetic wave be deflected by an electric field? By a magnetic field ?

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