A sinusoidal electromagnetic wave in a vacuum is propagating in the
+hat(z)
direction. At a certain point in the wave at a certain instant in time, the electric field points in the
-hat(x)
direction. At the same point and at the same instant, the magnetic field points in the a:
+hat(y)
direction b:
-hat(y)
direction c:
+hat(z)
direction d:
-hat(z)
direction e: none of the above