A plane electromagnetic wave of frequency $25 \;MHz$ travels in free space along the $x$ -direction. At a particular point in space and time, $E = 6.3\,\hat j\;\,V/m$. What is $B$ at this point?
A plane electromagnetic wave of frequency $25 \;MHz$ travels in free space along the $x$ -direction. At a particular point in space and time, $E = 6.3\,\hat j\;\,V/m$. What is $B$ at this point?
- A
$1.9 \times 10^{-8}\;\hat i\;T$
- B
$2.1 \times 10^{-8}\;\hat k\;T$
- C
$2.1 \times 10^{-8}\;\hat j\;T$
- D
$8.2 \times 10^{-8}\;\hat k\;T$
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