本题目来源于试卷: --Inductors，类别为 美国物理杯赛(Physics Bowl)
[单选题]
05.50: A series RL circuit gjd 2+q2 ul ls;3dh+vqan e8trk:sk 7)is shown. r wp bf. ga4f4mr2k w-7l,zr(m Which of the suggested changes in the circuit (labeled I, II, and III) would result in the initial voltage across the inductor (a 24.4kmbfa lp ,mwz- rrw (7fgrt the instant that the switch is closed) to be double what it is for the circuit shown?
I. Reduce the resistance in the circuit to R0/2.
II. Double the inductance in the circuit to 2L0.
III. Add a second identical inductor to the circuit in parallel with the first inductor.
A. Only change I
B. Only change II
C. Only change III
D. Changes I and II must be done together
E. None of the changes achieves the desired result.
参考答案: E
本题详细解析:
暂无
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