In an electromagnetic wave, the direction of the magnetic induction \(\vec{B}\) is
A. parallel to the electric field \(\vec{E}\).
B. perpendicular to the electric field \(\vec{E}\).
C. antiparallel to the pointing vector \(\vec{S}\).
D. random.
Answer:B
In an electromagnetic wave, the direction of the magnetic induction \(\vec{B}\) is
A. parallel to the electric field \(\vec{E}\). B. perpendicular to the electric field \(\vec{E}\). C. antiparallel to the pointing vector \(\vec{S}\). D. random.