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PHYS1112 Waves Question?
At a certain instant in time, an electromagnetic wave has vector E in the -z direction and vector B in the +y direction. In what direction does the wave propagate?
a. +x direction
b. -x direction
c. +y direction
d. -z direction
e. +z direction
I am not the best with vectors to answer this question correctly and understand this.
1 Answer
- NCSLv 76 days agoFavorite Answer
The wave direction is given by E x M where "x" represents the cross product. Using that rule, the direction of v is
-z cross +y = +x ◄ choice a
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