本课配套习题挑战模式1/5
单选题
难度系数:
1.有一种节日彩灯上串联着50只相同的灯泡,如果电源电压为220V,则每只小灯泡两端的电压为( )
A: 220V |
B: 44V |
C: 4.4V |
D: 0V |
一次做对,真牛!
+5奖励规则>
- 提示1:5Liy6IGU55S16Lev5Lit55S16Lev5Lik56uv55qE5oC755S15Y6L562J5LqO5ZCE6YOo5YiG55So55S15Zmo5Lik56uv55qE55S15Y6L5LmL5ZKM
- 答案:Qw==
6Kej77ya5Zug5Li65Liy6IGU55S16Lev5Lit55S16Lev5Lik56uv55qE5oC755S15Y6L562J5LqO5ZCE6YOo5YiG55So55S15Zmo5Lik56uv55qE55S15Y6L5LmL5ZKM77yM5omA5Lul5bCGNTDlj6rlsI/nga/ms6HvvIjkuLLogZTvvInmjqXliLAyMjBW55qE5a625bqt55S16Lev5Lit77yM5q+P5Y+q54Gv5rOh55qE55S15Y6L5Li6NC40Vu+8juaVhemAiUPvvI4=
本课配套习题挑战模式2/5
单选题
难度系数:
2.如图所示的电路图中,当开关S1闭合时,电压表的示数是3V,若再将开关S2闭合,则电压表的示数会( )

A: 不变 |
B: 减小 |
C: 增大 |
D: 无法确定 |
一次做对,真牛!
+5奖励规则>
- 提示1:55S15Y6L6KGo5rWL55qE5piv55S15rqQ55S15Y6L
- 答案:QQ==
55Sx55S16Lev5Zu+5Y+v55+l77yM5b2T5byA5YWzUzxzdWI+MTwvc3ViPumXreWQiOaXtu+8jOeUteWOi+ihqOaOpeWIsOS6hueUtea6kOS4pOerr++8jOa1i+eahOaYr+eUtea6kOeUteWOi++8jOeUteWOi+ihqOeahOekuuaVsOaYrzNW77yM6K+05piO55S15rqQ55S15Y6L5pivM1bvvJvlvZPlho3lsIblvIDlhbNTPHN1Yj4yPC9zdWI+6Zet5ZCI5pe277yM55S15Y6L6KGo5LuN54S25piv5o6l5Yiw55S15rqQ55qE5Lik56uv77yM5LuN54S25piv5rWL55qE55S15rqQ55S15Y6L77yO5omA5Lul56S65pWw5pivM1bjgILmlYXpgIlBLg==
本课配套习题挑战模式3/5
单选题
难度系数:
3.
如图所示的电路中,当s闭合时,电压表V1的示数是7.5V,V2示数是9V,若电源电压为12 V,则L2两端的电压为() |
![]() |
A: 4.5V |
B: 7.75V |
C: 3V |
D: 2V |
一次做对,真牛!
+5奖励规则>
- 提示1:5Liy6IGU55S16Lev5Lit55S16Lev5Lik56uv55qE5oC755S15Y6L562J5LqO5ZCE6YOo5YiG55So55S15Zmo5Lik56uv55qE55S15Y6L5LmL5ZKM
- 答案:QQ==
55S15Y6L6KGoVjxzdWI+MTwvc3ViPua1i0w8c3ViPjE8L3N1Yj7lkoxMPHN1Yj4yPC9zdWI+55qE5oC755S15Y6L77yM55S15Y6L6KGoVjxzdWI+Mjwvc3ViPua1i0w8c3ViPjI8L3N1Yj7lkoxMPHN1Yj4zPC9zdWI+55qE5oC755S15Y6L77yM55S15rqQ55S15Y6L5Li6MTJW77yM5qC55o2u5Liy6IGU55S16Lev5Lit55S16Lev5Lik56uv55qE5oC755S15Y6L562J5LqO5ZCE6YOo5YiG55So55S15Zmo5Lik56uv55qE55S15Y6L5LmL5ZKM77yM5Y+v5b6XTDxzdWI+MTwvc3ViPuS4pOerr+eahOeUteWOi+S4uu+8mjEyVi05Vj0zVu+8jOaJgOS7pUw8c3ViPjI8L3N1Yj7kuKTnq6/nmoTnlLXljovkuLrvvJo3LjVWLTNWPTQuNVbvvIzmlYXpgIlBLg==
本课配套习题挑战模式4/5
单选题
难度系数:
4.如图所示,将电压表先后并联接在AB处、BC处、AC处,当开关S闭合后,电压表读数最大时,是接在( )

A: A、C处 |
B: A、B处 |
C: B、C处 |
D: 三处一样大 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Liy6IGU55S16Lev5Lit55S16Lev5Lik56uv55qE5oC755S15Y6L562J5LqO5ZCE6YOo5YiG55So55S15Zmo5Lik56uv55qE55S15Y6L5LmL5ZKM
- 答案:QQ==
5Zug5Li65Lik54Gv5rOh5piv5Liy6IGU77yM5omA5Lul5oC755S15Y6L562J5LqO5ZCE6YOo5YiG55S15Y6L55qE5ZKM77yb5Y2zVTxzdWI+QUM8L3N1Yj49VTxzdWI+QUI8L3N1Yj4rVTxzdWI+QkM8L3N1Yj7vvJvmiYDku6VBQ+S5i+mXtOeahOeUteWOi+acgOWkp++8juaVhemAiUHvvI4=
本课配套习题挑战模式5/5
单选题
难度系数:
5.
如右图所示的电路中,当开关S闭合时,电压表V1的示数为3 V,V2的示数为6 V,则电源电压为()
A: 3 V |
B: 6 V |
C: 9 V |
D: 12V |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+56Gu5a6a55S15Y6L6KGo5rWL6YeP5ZOq6YOo5YiG55qE55S15Y6L5YC8PC9wPg==
- 答案:Qw==
PHA+55S15Y6L6KGoVjxzdWI+MTwvc3ViPua1i0U8c3ViPjE8L3N1Yj7nmoTnlLXljovvvIznlLXljovooahWPHN1Yj4yPC9zdWI+5rWLRTxzdWI+Mjwvc3ViPueahOeUteWOi++8jOeUseS6juaYr+S4suiBlOeUtei3r++8jOaJgOS7peeUtea6kOeUteWOi+S4uu+8mjNWKzZWPTlW77yM5pWF6YCJQy48L3A+