• 2022-06-01
    一空气平行板电容器,极板面积为S,两极板相距为d,电容器两端电压为U,若将厚度为d/2的金属板平行插入电容器内,保持电压U不变,则极板上电量增加Δq为 ( )[img=300x132]1803b1c9aa30398.jpg[/img]
    A: [img=53x50]1803b1c9b6ec550.jpg[/img]
    B: [img=74x52]1803b1c9be7212b.jpg[/img]
    C: [img=62x52]1803b1c9c67c406.jpg[/img]
    D: 0
  • 举一反三