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 with an emf of E is connectemhhyn;h yx.bpr ;dd a;0f/ ;d.d to a variable resistor. The voltmeter cofph.;h /h;ya;d b.yr0dmdn;x 7 iapf,ybfo x 69e)egt-4bjj;w27gpannected to the variable resistor rep ai2atbxj- 9e;b,)fopg6 jw 77g4 eyfads4.2$V$ when the resistance is 6Ω. When the resistance is adjusted to 3 Ω the voltmeter reads 3.6$V$.
What is the internal resistance of the battery?
A. 0.6Ω
B. 0.8Ω
C. 1.0Ω
D. 1.2Ω
参考答案: D
本题详细解析:
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