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Average intensity of an EM wave is I = 0...

Average intensity of an EM wave is `I = 0.22 W/m^2` then magnetic field amplitude of this wave is

A

`2.8 xx 10^-6 T`

B

`2.3 xx 10^-7 T`

C

`5.8 xx 10^-6 T`

D

`4.3 xx 10^-8 T`

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