A plane electromagnetic wave of frequency 100 MHz is travelling in vacuum along the x-direction. At a particular point in space and time, $\overrightarrow B = 2.0 \times {10^{ - 8}}\widehat kT$. (where, $\widehat k$ is unit vector along z-direction) What is $\overrightarrow E$ at this point?
Solution
f = 100 MHz<br><br>$\overrightarrow B = 2 \times {10^{ - 8}}T$<br><br>$\overrightarrow E = \overrightarrow B \times \overrightarrow V$<br><br>$= (2 \times {10^8}\widehat k) \times (3 \times {10^8}\widehat i)$<br><br>$= 6(\widehat k \times \widehat i) = 6\widehat j$ V/m<br><br>$\Rightarrow$ $\overrightarrow E = 6\widehat j$ V/m
About this question
Subject: Physics · Chapter: Electromagnetic Waves · Topic: Properties of EM Waves
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