单选题-单题 适中0.65 引用6 组卷650
如图所示灯泡A1、A2的规格完全相同,线圈L的电阻不计,下列说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/4/14/2699477115338752/2699519176990720/STEM/3ac1542c-d602-4da1-8b02-f9f9c12fe485.png?resizew=190)
![](https://img.xkw.com/dksih/QBM/2021/4/14/2699477115338752/2699519176990720/STEM/3ac1542c-d602-4da1-8b02-f9f9c12fe485.png?resizew=190)
A.当接通电路时,A1和A2始终一样亮 |
B.当接通电路时,A2先达到最大亮度,A1后达到最大亮度,最后两灯一样亮 |
C.当断开电路时,A2立即熄灭、A1过一会几才熄灭 |
D.当断开电路时,两灯都立即熄灭 |
2021·天津红桥·一模
类题推荐
如图所示,电路中A1和A2是完全相同的灯泡,线圈L电阻不可忽略,下列说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/42fbdaf2-1d45-48dd-b41d-81119fe37518.png?resizew=142)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/42fbdaf2-1d45-48dd-b41d-81119fe37518.png?resizew=142)
A.合上开关K接通电路时,A1和A2均立即点亮 |
B.合上开关K接通电路时,A2先亮,A1后亮,最后一样亮 |
C.断开开关K切断电路时,A1和A2都要过一会儿才熄灭 |
D.断开开关K切断电路时,A2立刻熄灭,A1闪亮一下才熄灭 |
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/2017/3/12/1642476611870720/1649132284190720/STEM/39fc3f3e-b21e-4d34-8ed0-011457c4a635.png?resizew=170)
![](https://img.xkw.com/dksih/QBM/2017/3/12/1642476611870720/1649132284190720/STEM/39fc3f3e-b21e-4d34-8ed0-011457c4a635.png?resizew=170)
A.合上开关K接通电路时,A2始终比A1亮 |
B.断开开关K切断电路时,A2先熄灭,A1过一会儿才熄灭 |
C.合上开关K接通电路时,A2先亮,A1后亮,最后一样亮 |
D.断开开关K切断电路时,A1和A2都要过一会儿才熄灭 |
在如图所示的电路中,A1和A2是两个完全相同的灯泡,线圈L的自感系数足够大,电阻不可忽略。下列说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/5e8a36a4-7195-4e72-906a-22dd6631806c.png?resizew=173)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/5e8a36a4-7195-4e72-906a-22dd6631806c.png?resizew=173)
A.断开开关S时,A2闪亮一下再熄灭 |
B.断开开关S时,A1和A2都立即熄灭 |
C.断开开关S时,流过A2的电流方向向右 |
D.合上开关S时,A2先亮,A1后亮,最后亮度不一样 |
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