• 2022-05-30
    如图2所示,平板电容器(忽略边缘效应)充电时, 沿环路L1、L2磁场强度H的环流中, 必有:( )[img=128x87]18031720e0294f0.jpg[/img]
    A: [img=231x77]18031720ea86dd4.jpg[/img]
    B: [img=231x77]18031720f694e63.jpg[/img]
    C: [img=235x77]1803172101e2e82.jpg[/img]
    D: [img=153x76]180317210cc7d66.jpg[/img]