.Resistor. (id: 7e83db416)

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 i2k jkb f7snnqw .s8ge.2t wp6yb.k )6ammeter, a swi fn31y.xejvfpujo9vi1n 1 q:y*p( * rjtch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampvyyp1r 3voi(19n* 1n* uj eqx p.fj:fjeres.
With the switch open, what would be the potential difference across the 15 ohm resistor?

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


参考答案:  A


本题详细解析: 暂无

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