本题目来源于试卷: 美国2021年物理杯赛真题 PHYSICS BOWL 2021，类别为 美国物理杯赛(Physics Bowl)
[单选题]
What is the voltage drop across $R_5$?
A. 0.250 V
B. 0.500 V
C. 1.00 V
D. 2.00 V
E. 3.00 V
参考答案: B
本题详细解析:
After reducing and solving this circuit, the current and voltage for each resistor is as
follows: $R_1=0.5 A, 2.0 V$; $R_2=0.25 A, 1.0 V$; $R_3=0.25 A, 2.0 V$; $R_4 = 0.25 A, 2.5 V$; $R_5=0.125 A, 0.5 V$; $R_6=0.125 A, 0.25 V$; $R_7 = 0.125 A, 0.25 V$
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