Suppose I produce radio waves with an antenna that have a peak electric field amplitude E and peak magnetic field amplitude B. I

Question

3 years ago

15

f 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

1 answer:

denis23 [38] · Answer 1 · 2022-04-29T21:31:35+03:00

Answer:

Correct answer is 2B

Explanation:

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

$E=cB$

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

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

$2E=cB'\\\\2cB=cB'\\\\B'=2B$

Thus the magnetic field also doubles