Question 197: EM waves

Question

For a plane electromagnetic wave propagating in x-direction, which one of the following combination gives the correct possible directions for electric field (E) and magnetic field (B) respectively?

Accepted Answer

Wave in x direction
C = $${\overrightarrow E }$$ $$	imes$$ $${\overrightarrow B }$$
$$\left( { - \widehat j + \widehat k} ight) 	imes \left( { - \widehat j - \widehat k} ight)$$
$$ = \widehat i + \widehat i$$
$$ = 2\widehat i$$

Answer

$$ - \widehat j + \widehat k, - \widehat j + \widehat k$$

Answer

$$  \widehat j + \widehat k,  \widehat j + \widehat k$$

Answer

$$ - \widehat j + \widehat k, - \widehat j - \widehat k$$

Answer

$$\widehat j + \widehat k, - \widehat j - \widehat k$$

EM waves

For a plane electromagnetic wave propagating in x-direction, which one of the following combination gives the correct possible directions for electric field (E) and magnetic field (B) respectively?

Choose the correct answer: