.Resistor. (id: 169e12a08)

本题目来源于试卷: .Resistor.，类别为 美国物理杯赛(Physics Bowl)

[单选题]
02.21: An ideal battery, an ideal ammee rvwu*,g/o.(+pwk uyter, 4q6) 9x-n) (0 xts2bldkbgf3urlibiba switch and three resistors are connected as sho2 xgl0(bu i)s-qri9n b4 b)lfd63t xkbwn. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.
With the switch open, what would be the potential difference across the 15 ohm resistor?

A. $30 V$
B. $40 V$
C. $60 V$
D. $70 V$
E. $110V$


参考答案:  A


本题详细解析: 暂无

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