配套习题-欧姆定律比值问题(上) -【青果学院】

本课配套习题挑战模式1/5

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单选题

难度系数：

1.

有两个电阻，R₁=10Ω，R₂=6Ω，如果把它们串联在电路中，通过它们的电流分别为I₁、I₂，它们两端的电压分别为U₁，U₂，则I₁：I₂、U₁：U₂分别为（　　）

A:
1：1，5：3

B:
5：3，1：1

C:
1：1，1：1

D:
5：3，2：3

提示1：PHA+5Liy6IGU55S16Lev55S15rWB5aSE5aSE55u4562JLOeUteWOi+avlOetieS6jueUtemYu+avlDwvcD4=
答案：QQ==
PGRpdj7kuLLogZTnlLXot6/nlLXmtYHlpITlpITnm7jnrYks55S15Y6L5q+U562J5LqO55S16Zi75q+ULOWImUHmraPnoa48L2Rpdj4=

本课配套习题挑战模式2/5

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单选题

难度系数：

2.

如图所示电源电压保持不变，R₁=7Ω，R₂=8Ω，S闭合，电压表的示数为4V，则电源电压为（　　）

A:
2.5V

B:
7.5V

C:
14V

D:
3.5V

提示1：PHA+5Liy6IGU55S16Lev55S15Y6L5q+U562J5LqO55S16Zi75q+UPC9wPg==
提示2：PHA+5Liy6IGU55S16Lev5oC755S15Y6L562J5LqO5ZCE55S15Y6L5LmL5ZKMPGJyPjwvcD4=
答案：Qg==
PGRpdj7kuLLogZTnlLXot6/nlLXljovmr5TnrYnkuo7nlLXpmLvmr5Qs5YiZUjxzdWI+MTwvc3ViPuS4pOerr+eUteWOi+S4ujMuNVbvvIzmgLvnlLXljovnrYnkuo43LjVW77yMROato+ehrjxicj48L2Rpdj4=

本课配套习题挑战模式3/5

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单选题

难度系数：

3.

如图所示电路中，电源电压恒定不变，R₁：R₂=1：2，当开关S闭合时，电流表的示数为I₁，把开关S断开后，电流表的示数为I₂，则I₁：I₂为（　　）

A:
3：1

B:
1：2

C:
2：1

D:
1：3

提示1：PHA+5byA5YWz6Zet5ZCILFI8c3ViPjI8L3N1Yj7nn63ot68s5byA5YWz5pat5byALOS4pOeUtemYu+S4suiBlDxicj48L3A+
提示2：PHA+5qC55o2uST08aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMDAvOUIvckJBQ0ZGTU1hb3FUSFQxQkFBQUJOWEVXMlVBNDExLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8wMC85Qi9yQkFDRkZNTWFvcVRIVDFCQUFBQk5YRVcyVUE0MTEucG5nIiBoZWlnaHQ9IjQyIiB3aWR0aD0iNyI+5Y2z5Y+v5rGC5b6X55S15rWB5q+UPC9wPg==
答案：QQ==
PGRpdj7lvZPlvIDlhbNT6Zet5ZCI5pe277yM55S16Lev5Li6UjxzdWI+MTwvc3ViPueahOeugOWNleeUtei3r++8jOeUtea1geihqOa1i+eUtei3r+eUtea1gTwvZGl2PjxkaXY+STxzdWI+MTwvc3ViPj08aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMDAvOUIvckJBQ0ZGTU1hb3FRenlvLUFBQUJVMnVkN0dzMzI1LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8wMC85Qi9yQkFDRkZNTWFvcVF6eW8tQUFBQlUydWQ3R3MzMjUucG5nIiBoZWlnaHQ9IjQyIiB3aWR0aD0iMTIiPjwvZGl2PjxkaXY+5b2T5byA5YWzU+aWreW8gOWQju+8jOS4pOeUtemYu+S4suiBlO+8jOeUtea1geihqOWQjOagt+a1i+eUtei3r+eUtea1ge+8jOeUtea1geihqOeahOekuuaVsDxicj48L2Rpdj48ZGl2Pkk8c3ViPjI8L3N1Yj49PGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIzLzhCL3JCQUNFMU1NYW9yeGVDZ1FBQUFCaFVZYzZPNDA0My5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjMvOEIvckJBQ0UxTU1hb3J4ZUNnUUFBQUJoVVljNk80MDQzLnBuZyIgaGVpZ2h0PSI0MiIgd2lkdGg9IjMwIj49PGltZyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzAwLzlCL3JCQUNGRk1NYW9yd0NPN1lBQUFCbUZVRXJrYzAwMC5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMDAvOUIvckJBQ0ZGTU1hb3J3Q083WUFBQUJtRlVFcmtjMDAwLnBuZyIgaGVpZ2h0PSI0MiIgd2lkdGg9IjM2Ij49PGltZyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzIzLzhCL3JCQUNFMU1NYW9yQW1nT0ZBQUFCYlRfVXF1bzg2Mi5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMjMvOEIvckJBQ0UxTU1hb3JBbWdPRkFBQUJiVF9VcXVvODYyLnBuZyIgaGVpZ2h0PSI0MiIgd2lkdGg9IjE3Ij48L2Rpdj48ZGl2PuaJgOS7pUk8c3ViPjE8L3N1Yj7vvJpJPHN1Yj4yPC9zdWI+PTxpbWcgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8wMC85Qi9yQkFDRkZNTWFvcVF6eW8tQUFBQlUydWQ3R3MzMjUucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzAwLzlCL3JCQUNGRk1NYW9xUXp5by1BQUFCVTJ1ZDdHczMyNS5wbmciIGhlaWdodD0iNDIiIHdpZHRoPSIxMiI+OjxpbWcgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy84Qi9yQkFDRTFNTWFvdnpXYVVwQUFBQmNnV3ViLWM5NTgucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzIzLzhCL3JCQUNFMU1NYW92eldhVXBBQUFCY2dXdWItYzk1OC5wbmciIGhlaWdodD0iNDIiIHdpZHRoPSIyMCI+PTPvvJoxPC9kaXY+

本课配套习题挑战模式4/5

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单选题

难度系数：

4.在探究“串联电路电压规律”的实验中，小林同学连接完如图所示的电路. 当开关断开时，发现电压表示数为6V；闭合开关后，发现电压表示数变为2V. 则开关闭合后，下列说法正确的是（　　）

A: R₁两端的电压与R₂两端的电压之比为3：1

B: R₁的电阻与R₂的电阻之比为1：2

C: 通过R₁的电流与通过R₂的电流之比为2：1

D: R₁消耗的功率与R₂消耗的功率之比为2：1

提示1：IOW9k+W8gOWFs+aWreW8gOaXtiznlLXljovooajmtYvnlLXmupDnlLXljos=
提示2：IOS4suiBlOeUtei3r+S4pOerr+eahOaAu+eUteWOi+etieS6juWQhOmDqOWIhueUtei3r+S4pOerr+eahOeUteWOi+S5i+WSjC4g5Liy6IGU55S16Lev5pyJ5YiG5Y6L5L2c55So77yM55S15Y6L5LmL5q+U562J5LqO55S16Zi75LmL5q+U
答案：Qg==
PGRpdj7lvZPlvIDlhbPmlq3lvIDml7Ys55S15Y6L6KGo5rWL55S15rqQ55S15Y6LO+S4suiBlOeUtei3r+S4pOerr+eahOaAu+eUteWOi+etieS6juWQhOmDqOWIhueUtei3r+S4pOerr+eahOeUteWOi+S5i+WSjC4g5Liy6IGU55S16Lev5pyJ5YiG5Y6L5L2c55So77yM55S15Y6L5LmL5q+U562J5LqO55S16Zi75LmL5q+ULOWImULmraPnoa48L2Rpdj4=

本课配套习题挑战模式5/5

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单选题

难度系数：

5.

如图所示，当开关S闭合，甲、乙两表为电压表时，两表读数之比U_甲：U_乙为4：1；当开关S断开，甲、乙两表为电流表时，两表的读数之比I_甲：I_乙为（　　）

A:
4：3

B:
3：2

C:
3：4

D:
3：1

提示1：PHA+56Gu5a6a5byA5YWz5pat5byA5oiW6Zet5ZCI5a+555S16Lev55qE5b2x5ZONPC9wPg==
提示2：PHA+5Liy6IGU55S16Lev55S15Y6L5q+U562J5LqO55S16Zi75q+UPC9wPg==
提示3：PHA+5bm26IGU55S16Lev55S15rWB5q+U562J5LqO55S16Zi755qE5Y+N5q+UPC9wPg==
答案：Qw==
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