单选题-单题 适中0.65 引用9 组卷896
如图所示,线圈自感系数很大,开关闭合且电路达到稳定时,小灯泡正常发光,则当闭合开关和断开开关的瞬间能观察到的现象分别是( )
![](https://img.xkw.com/dksih/QBM/2018/7/4/1981256879218688/1982056956944384/STEM/c2cf089c8a074f0b949ec6e854e9efb7.png?resizew=135)
![](https://img.xkw.com/dksih/QBM/2018/7/4/1981256879218688/1982056956944384/STEM/c2cf089c8a074f0b949ec6e854e9efb7.png?resizew=135)
A.小灯泡慢慢亮,小灯泡立即熄灭 |
B.小灯泡立即亮,小灯泡立即熄灭 |
C.小灯泡慢慢亮,小灯泡比原来更亮一下再慢慢熄灭 |
D.小灯泡立即亮,小灯泡比原来更亮一下再慢慢熄灭 |
12-13高二上·海南·期末
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如图所示,开关S闭合且回路中电流达到稳定时,小灯泡A能正常发光,L为自感线圈,则( )
![](https://img.xkw.com/dksih/QBM/2015/3/1/1575719823876096/1575719848984576/STEM/f86ff91c-70ca-4b21-b737-298051c5e240.png?resizew=113)
![](https://img.xkw.com/dksih/QBM/2015/3/1/1575719823876096/1575719848984576/STEM/f86ff91c-70ca-4b21-b737-298051c5e240.png?resizew=113)
A.开关S闭合瞬时,小灯泡立即变亮 |
B.开关S闭合瞬时,小灯泡将慢慢变亮 |
C.开关S断开瞬时,小灯泡慢慢熄灭 |
D.开关S断开瞬时,小灯泡先闪亮一下,再慢慢熄灭 |
如图所示,L为自感系数足够大的线圈,电路稳定时小灯泡可正常发光,以下说法正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.svg)
![](https://img.xkw.com/dksih/QBM/2019/1/9/2115073355399168/2115918719115264/STEM/0cf08039-7cdd-4433-804f-d49c97e720a7.png?resizew=107)
![](https://img.xkw.com/dksih/QBM/2019/1/9/2115073355399168/2115918719115264/STEM/0cf08039-7cdd-4433-804f-d49c97e720a7.png?resizew=107)
A.闭合开关S,小灯泡立即变亮 |
B.断开开关S,小灯泡立即熄灭 |
C.断开开关S,小灯泡缓慢熄灭 |
D.断开开关S,小灯泡闪亮一下再慢慢熄灭 |
如图所示,L是自感系数很大的线圈,但其自身的电阻几乎为0,A和B是两个相同的小灯泡,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/c4830df1-1ac2-4df0-9156-4dbcb9e294e5.png?resizew=207)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/c4830df1-1ac2-4df0-9156-4dbcb9e294e5.png?resizew=207)
A.当开关闭合的瞬间,A立即发光,B不发光 |
B.当开关闭合的瞬间,A不发光,B立即发光 |
C.当开关S闭合电路稳定后,再断开开关,A立即熄灭,B闪亮后再慢慢熄灭 |
D.当开关S闭合电路稳定后,再断开开关,A慢慢熄灭,B不发光。 |
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