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In an electromagnetic field, the amplitu...

In an electromagnetic field, the amplitude of magnetic field is `3 xx 10^-10` T. If the frequency of the wave is `10^12 Hz`, then the amplitude of the associated electric field will be

A

`9 V m^-1`

B

`9 xx 10^-2 V m^-1`

C

`3 xx 10^-10 V m^-1`

D

`3 xx 10^-2 V m^-1`

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  • The amplitude of the electric field of a plane electro- magnetic wave in air is 6.0 xx 10^(-4) Vm^(-1) . The amplitude of the magnetic field will be:

    A
    `1.8 xx 10^(5) T`
    B
    `5.0 xx 10^(3) T`
    C
    `2.0 xx 10^(-4) T`
    D
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  • In an electromagnetic wave, the average energy density associated with magnetic field is :

    A
    `Li_(0)^(2) // 2`
    B
    `B^(2) // 2mu_(0)`
    C
    `mu_(0)B^(2) // 2`
    D
    `mu_(0) // 2B^(2)`

  • The electric amplitude of the wave is 5 Vm^(-1) . The magnetic amplitude of this wave is:

    A
    `5 A Wb // m^(2)`
    B
    `1.67 xx 10^(-10) Wb // m^(2)`
    C
    `1.67 xx 10^(-8) Wb // m^(2)`
    D
    `5 xx 10^(-10) Wb // m^(2)`

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