本题目来源于试卷: Combine Problems，类别为 美国物理杯赛(Physics Bowl)
[单选题]
04.39: The circuit sho y vh17 t t;dler-,n*rn+:kxd1ja wb1 swn has an ideal ammeter with zero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanent ab:s+wd xj1k 1ly 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
| 
