• 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=[ ]
    A: [img=41x44]18035e968da652e.png[/img]
    B: [img=52x44]18035e9696281fa.png[/img]
    C: [img=41x44]18035e969e43ff1.png[/img]
    D: [img=41x44]18035e96a6b0b21.png[/img]
  • 举一反三