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Compute the speed of the electromagnetic...

Compute the speed of the electromagnetic wave in a medium if the amplitude of electric and magnetic fields are `3 xx 10^(4) N C^(-1) and 2 xx 10^(-4)T,` respectively.

Text Solution

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The amplitude of the electric field, `E_(0)=3 xx 10^(4) NC^(-1)`.
The amplitude of the magnetic field, `B_(0)=2 xx 10^(4) T`. Therefore, speed of the electromagnetic wave in a medium is `v=(3 xx 10^(4))/(2 xx 10^(-4))=1.5 xx 10^(8) ms^(-1)`
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