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