单选题6.18

功率为100W的灯泡和40W的灯泡串联后接入电路，40W的灯泡消耗的功率是100W的灯泡的（）。

发布于 2021-02-22 21:09:31

【单选题】
A 4倍$
B $ 0.4倍$
C $ 2.5倍$
D $ 0.25倍

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zt860821 2023-02-22

这家伙很懒，什么也没写！

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