如图所示,
是自感系数很大的线圈,电阻不为零,
和
是两个相同的小灯泡。闭合开关
一段时间后两灯泡都发光,断开开关
瞬间,灯泡
闪亮一下后熄灭。下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4489d9b83072184c0e1d6b09be50ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1e8babee63bfc889ae5a34632284bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a454a2c91ace8ef50412a6adf91f8086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a454a2c91ace8ef50412a6adf91f8086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1e8babee63bfc889ae5a34632284bc.png)
A.闭合开关![]() |
B.线圈的电阻必定小于小灯泡![]() |
C.断开开关![]() ![]() |
D.断开开关![]() ![]() |
更新时间:2024-01-26 14:18:19
|
【知识点】 分析含自感线圈的电路小灯泡能否闪亮的原因
相似题推荐
单选题-单题
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【推荐1】如图所示的电路中,A1和A2是完全相同的灯泡,线圈L的电阻可以忽略.下列说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/2023/5/15/3238422391447552/3238856097808384/STEM/150b5731261f42c9a7e6da4880c94304.png?resizew=144)
![](https://img.xkw.com/dksih/QBM/2023/5/15/3238422391447552/3238856097808384/STEM/150b5731261f42c9a7e6da4880c94304.png?resizew=144)
A.线圈的自感系数仅与匝数有关 |
B.合上开关K瞬间,A2立刻亮,A1逐渐变亮 |
C.合上开关K一段时间后,再断开开关K时,A2闪亮一下后逐渐熄灭,A1逐渐熄灭 |
D.合上开关K一段时间后,再断开开关K时,A2电流方向向左 |
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【推荐2】如图所示,
为灯泡,
为自感系数很大的线圈,其直流电阻可忽略不计,
为电源,
为定值电阻,
为开关,下列正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/4073b0c0-62d3-4ed6-a938-c3dd254bc34b.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9b4a83b9aebebf29de0c4406ebf894.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/4073b0c0-62d3-4ed6-a938-c3dd254bc34b.png?resizew=138)
A.合上开关,![]() |
B.合上开关,![]() |
C.电路稳定后断开开关,![]() |
D.电路稳定后断开开关,![]() |
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