已知电路如图所示,S闭合时I=1A,则当S断开时,I=______。<img src='https://img2.soutiyun.com/ask/6492001-6495000/2e2e26707d0ddda0c11435e64f65a7dd.jpg' />

A.2A B.-2A C.1A D.-1A

时间:2023-01-19 13:26:46

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