Question

part a
the electric and magnetic field vectors at a specific point in space and time of an electromagnetic wave are illustrated in (figure 1). based on this information, in what direction does the electromagnetic wave propagate?
view available hint(s)
+x
-x
+y
-y
+z
-z
at a +45° angle in the xy plane
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Explanation:

The direction of propagation of an electromagnetic wave is given by the cross - product of the electric field vector \(\vec{E}\) and the magnetic field vector \(\vec{B}\), i.e., \(\vec{S}=\vec{E}\times\vec{B}\) (Poynting vector). If \(\vec{E}\) is along \(+x\) and \(\vec{B}\) is along \(+y\), then using the right - hand rule for cross - products (\(\hat{i}\times\hat{j}=\hat{k}\)), the direction of propagation is along \(+z\).

Answer:

+z