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In an electromagnetic wave in vacuum. Th...

In an electromagnetic wave in vacuum. The electrical and magnetic fields are `40piV//m` and `0.4xx10^(-7)T`. The poynting vector

A

`4.4 W m^(-1)`

B

`0.44 W m^(-1)`

C

`5.65 W m^(-1)`

D

`4.0 W m^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
Poynting vector `=(B_(0)E_(0))/(mu_(0))`
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