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Suppose I produce radio waves with an antenna that have a peak electric field amplitude E and peak magnetic field amplitude B. If I were to double the amplitude of the electric field (i.e. double E) what is the new value for B? B B/4 B/2 Zero 2B 4B

Respuesta :

Answer:

Correct answer is 2B

Explanation:

The electric field magnitude and magnetic field magnitude in an electromagnetic waves are related as under

[tex]E=cB[/tex]

where 'c' is velocity of light in the medium of transmission

According to the given question if we double the electric field we have

[tex]2E=cB'\\\\2cB=cB'\\\\B'=2B[/tex]

Thus the magnetic field also doubles

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