在交变磁场中,图一开关断开,电流可以从a流动到b或者从b到a吗?开关两端可以看做极板,看成电容器吗? 知乎 Template




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tomski在交变磁场中,图一开关断开,电流可以从a流动到b或者从b到a吗?开关两端可以看做极板,看成电容器吗? 知乎 coloring