Em Waves Question 69
Question: In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of $ 2.5\times 10^{10}Hz $ and amplitude 480 V/m. The amplitude of the oscillating magnetic field will be
Options:
A) $ 1.52\times {{10}^{-8}}Wb/m^{2} $
B) $ 1.52\times {{10}^{-7}}Wb/m^{2} $
C) $ 1.6\times {{10}^{-6}}Wb/m^{2} $
D) $ 1.6\times {{10}^{-7}}Wb/m^{2} $
Show Answer
Answer:
Correct Answer: C
Solution:
[c] $ c=\frac{E _{0}}{B _{0}} $
$ \
Therefore B _{0}=\frac{E _{0}}{c}=1.6\times {{10}^{-6}}Wb/m^{2} $
BETA
