Em Waves Question 99
Question: In a plane electromagnetic wave propagating in space has an electric field of amplitude $ 9\times 10^{3}V/m $ then the amplitude of the magnetic field is
Options:
A) $ 2.7\times 10^{12}T $
B) $ 9.0\times {{10}^{-3}}T $
C) $ 3.0\times {{10}^{-4}}T $
D) $ 3.0\times {{10}^{-5}}T $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] $ B _{0}=\frac{E _{0}}{c}=\frac{9\times 10^{3}}{3\times 10^{8}}=3\times {{10}^{-5}}T $ .
BETA
