Particulate Nature of Matter B.5 Electric Circuits (id: 74f585f21)

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 battery of emf $ϵ$ and an internal resistance $r$ is connected across a resistance R. The total power dissipated in the circuit is P.
An identical resistor and an identical battery are added in series to the circuit. What is the new total power dissipated in this circuit?

A. $P$
B. 2$P$
C. 4$P$
D. 8$P$


参考答案:  B


本题详细解析:

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