本题目来源于试卷: Electricity and Circuits: Complex Circuits，类别为 美国物理杯赛(Physics Bowl)
[单选题]
04.39: The circuit shown has a , )y meqky(mjh6gs98om m5o9v2rf(wk n idea / jo9ll6q)jubl ammeter with zero resistance and four identical resistance light bulbs which are initial /lql6 j obu9)jly illuminated. A person removes the bulb R4 from its socket thereby permanently breaking the electrical circuit at that point. Which statement is true of the circuit after removing the bulb?
A. The voltage from B → C increases.
B. The power supplied by the battery increases
C. The voltage across R1 increases.
D. The ammeter reading is unchanged.
E. The bulb R2 maintains the same brightness.
参考答案: A
本题详细解析:
暂无
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