Duration: 4:43

1 views

0

An EM wave propagating in \( x \)-direction has a wavelength of \( 8 \mathrm{~mm} \). The electric field vibrating \( y \)-direction has maximum magnitude of \( 60 \mathrm{Vm}^{-1} \).
\( \mathrm{P} \)
Choose the correct equations for electric and
W
magnetic fields if the EM wave is propagating in vacuum
\[
\begin{array}{l}
E_{y}=60 \sin \left[\frac{\pi}{4} \times 10^{3}\left(x-3 \times 10^{8} t\right)\right] \hat{j} \mathrm{Vm}^{-1} \\
B_{z}=2 \sin \left[\frac{\pi}{4} \times 10^{3}\left(x-3 \times 10^{8} t\right)\right] \hat{k} \mathrm{~T}
\end{array}
\]
\[
\begin{array}{l}
E_{y}=2 \times 10^{-7} \sin \left[\frac{\pi}{4} \times 10^{3}\left(x-3 \times 10^{8} t\right)\right] \hat{j} \mathrm{Vm}^{-1} \\
B_{z}=60 \sin \left[\frac{\pi}{4} \times 10^{3}\left(x-3 \times 10^{8} t\right)\right] \hat{k} \mathrm{~T}
\end{array}
\]
\[
\begin{array}{l}
E_{y}=60 \sin \left[\frac{\pi}{4} \times 10^{3}\left(x-3 \times 10^{8} t\right)\right] \hat{j} \mathrm{Vm}^{-1} \\
B_{z}=2 \times 10^{-7} \sin \left[\frac{\pi}{4} \times 10^{3}\left(x-3 \times 10^{8} t\right)\right] \hat{k} \mathrm{~T} . \\
E_{y}=2 \times 10^{-7} \sin \left[\frac{\pi}{4} \times 10^{3}\left(x-4 \times 10^{8} t\right)\right] \hat{j} \mathrm{Vm}^{-1} \\
B_{z}=60 \sin \left[\frac{\pi}{4} \times 10^{3}\left(x-4 \times 10^{8} t\right)\right] \hat{k} \mathrm{~T}
\end{array}
\]
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live