Particulate Nature of Matter B.5 Electric Circuits (id: 312e13097)

本题目来源于试卷: Particulate Nature of Matter B.5 Electric Circuits，类别为 IB物理学

[单选题]
A cell of emf $ϵ$ and internal resistance $r$ is connected to a variable external resistance of R.


Which graph shows how V, the potential difference between A and B, varies with external resistance R?

A.
B.
C.
D.


参考答案:  D


本题详细解析:

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