• 2022-06-03
    半径为R1的导体球,带有电量q,球外有内外半径分别为R2和R3的同心导体球壳,球壳带有电量Q,则导体球的电势U为( )
    A: [img=278x68]1803d3a1428375f.jpg[/img]
    B: [img=128x68]1803d3a14d77ac7.jpg[/img]
    C: [img=130x68]1803d3a1584faf1.jpg[/img]
    D: [img=244x68]1803d3a163aa826.jpg[/img]