Physics Unit18: Electric Currents (id: 194af3b3d)

本题目来源于试卷: Physics Unit18: Electric Currents，类别为 通用国际物理

[单选题]
The direction of conventiovtba5yd01m hj /* +lyrn current is taken to be the direction a9 op:) afxvu)that

A. negative charges would flow.
B. positive charges would flow.


参考答案:  B


本题详细解析: 暂无

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