• 2022-07-27
    设在真空中沿着x轴正方向传播的平面电磁波,其电场强度的波的表达式是,Ez=E0cos2[img=11x14]1802d10088e531b.png[/img](νt-x/[img=11x19]1802d10091c6d7b.png[/img]), 则磁场强度的波的表达式是:
    A: H y =[img=37x51]1802d1009aa2fff.png[/img]E0cos2[img=11x14]1802d100a2d9101.png[/img](νt-x/[img=11x19]1802d100ab617f7.png[/img])
    B: H z =[img=37x51]1802d1009aa2fff.png[/img]E0cos2[img=11x14]1802d100a2d9101.png[/img](νt-x/[img=11x19]1802d100ab617f7.png[/img])
    C: H y =-[img=37x51]1802d1009aa2fff.png[/img]E0cos2[img=11x14]1802d100a2d9101.png[/img](νt-x/[img=11x19]1802d100ab617f7.png[/img])
    D: H y =[img=37x51]1802d1009aa2fff.png[/img]E0cos2[img=11x14]1802d100a2d9101.png[/img](νt+x/[img=11x19]1802d100ab617f7.png[/img])
  • 举一反三