本课配套习题挑战模式1/5
A: 伏安法 |
B: 伏阻法 |
C: 安阻法 |
D: 不能测 |
- 提示1:IOS8j+Wuieazlea1i+eUtemYu+eahOWOn+eQhu+8jOS9oOi/mOiusOW+l+WQl++8nw==
- 提示2:IOS8j+Wuieazlea1i+eUtemYu++8jOmcgOimgeeahOW3peWFt+acieWTquS6m++8nw==
- 提示3:IOWboOS4uuacieeUteWOi+ihqO+8jOS5n+acieeUtea1geihqO+8jOW9k+eEtueUqOS8j+WuieazlQ==
- 答案:QQ==
PGRpdj7lm6DkuLrmnInnlLXljovooajvvIzkuZ/mnInnlLXmtYHooajvvIzlvZPnhLbnlKjkvI/lronms5U8L2Rpdj4=
本课配套习题挑战模式2/5
A: 应该将这两个电阻并联 |
B: 应该将这两个电阻串联 |
C: 只需测出待测电阻的电压即可 |
D: 只需测出已知定值电阻的电压 |
- 提示1:IOWIqeeUqOS4suiBlOeUtei3r++8jOeUtea1geebuOetieeahOeJueeCuQ==
- 提示2:IOWmguaenOa1i+WHuuWumuWAvOeUtemYu+eahOeUteWOi++8jOWwseWPr+S7peaxguW+l+mAmui/h+Wug+eahOeUtea1gQ==
- 提示3:IOWumuWAvOeUtemYu+eahOeUtea1geS5n+WwseaYr+W+hea1i+eUtemYu+eahOeUtea1gQ==
- 答案:Qg==
PGRpdj7liKnnlKjkuLLogZTnlLXot6/vvIznlLXmtYHnm7jnrYnnmoTnibnngrks5aaC5p6c5rWL5Ye65a6a5YC855S16Zi755qE55S15Y6L77yM5bCx5Y+v5Lul5rGC5b6X6YCa6L+H5a6D55qE55S15rWBLCDlrprlgLznlLXpmLvnmoTnlLXmtYHkuZ/lsLHmmK/lvoXmtYvnlLXpmLvnmoTnlLXmtYEs5omA5Lul5Y2z5Y+v5rGC5b6X55S16Zi744CCPC9kaXY+
本课配套习题挑战模式3/5
给你以下器材:一个电源(其电压未知),一个标有“20Ω,1A”的滑动变阻器,导线若干,一个开关,一只电压表,一个待测电阻Rx。请你设计一个能测出Rx电阻值的电路。以下说法不正确的是()
A: 滑动变阻器起到一个定值电阻的作用 |
B: 应该将滑动变阻器和待测电阻并联 |
C: 至少要用电压表测两个电压值 |
D: 电流表只测一次电流即可 |
- 提示1:PHA+5LyP6Zi75rOV5rWL55S16Zi76ZyA6KaB5LiA5Liq5a6a5YC855S16Zi777yM5om+5Ye65p2l44CCPC9wPg==
- 提示2:PHA+5b2T5ruR5Yqo5Y+Y6Zi75Zmo572u5LqO5pyA5aSn6Zi75YC85pe277yM5Y2z5Y+v5L2c5Li65a6a5YC855S16Zi744CCPC9wPg==
- 提示3:PHA+5Yip55So5Liy6IGU55qE54m554K55Y2z5Y+v5rGC5b6XPC9wPg==
- 答案:Qg==
PGRpdj7lvZPmu5Hliqjlj5jpmLvlmajnva7kuo7mnIDlpKfpmLvlgLzml7bvvIzljbPlj6/kvZzkuLrlrprlgLznlLXpmLvjgILkvI/pmLvms5XpnIDopoHmtYvlh7rkuKTkuKrnlLXljovlgLzjgILliKnnlKjkuLLogZTnmoTnibnngrnljbPlj6/msYLlvpc8YnI+PC9kaXY+
本课配套习题挑战模式4/5
给你一个电池组、一个电压表、一个已知阻值的定值电阻R0、几个开关及几根导线,如果请你设法只连接一次电路就能测出未知电阻的阻值,以下哪个电路图是不可行的( )
A: |
B: |
C: |
D: |
- 提示1:PHA+55S15Y6L6KGo6YO95Y+v5Lul5rWL5Ye655S16Zi755S15Y6LPGJyPjwvcD4=
- 提示2:PHA+55S15Y6L6KGo55qE5q2j6LSf5p6B55qE5o6l5rOVPC9wPg==
- 提示3:PHA+5Yip55So5Liy6IGU55S16Lev55qE5YiG5Y6L5YWs5byP77yM5bCx5Y+v5Lul5rGC5Ye6PC9wPg==
- 答案:QixE
PGRpdj5B5q2j56Gu77yMQuS4reeUteWOi+ihqOeahOato+i0n+aegeWGsueqge+8jOS4jeWPr+ihjOOAgkPlj6/ooYznmoTvvIxE5Lit5peg6K665byA5YWz5byA6Zet77yM5Y+q6IO95rWL55S15rqQ55S15Y6L77yM5omA5Lul5LiN6KGM44CCPC9kaXY+
本课配套习题挑战模式5/5
利用一个电池组、一个电压表、一个已知阻值的定值电阻R0、两个开关及几根导线,设法只连接一次电路就能测出未知电阻的阻值,电路如图所示,开关S闭合时,电压表示数为U1,断开时为U2,则求未知电阻的表达式正确是( )
A: |
B: 0 |
C: 0 |
D: 0 |
- 提示1:PHA+55S15Y6L6KGo6YO95Y+v5Lul5rWL5Ye655S16Zi755qE55S15Y6LPGJyPjwvcD4=
- 提示2:PHA+5Yip55So5Liy6IGU55S16Lev55qE5YiG5Y6L5YWs5byP77yM5bCx5Y+v5Lul5rGC5Ye6PC9wPg==
- 提示3:PHA+PGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzAwLzk1L3JCQUNGRk1NYUtYaUNaTktBQUFESTJlNEd2VTg3OC5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMDAvOTUvckJBQ0ZGTU1hS1hpQ1pOS0FBQURJMmU0R3ZVODc4LnBuZyIgaGVpZ2h0PSI0OCIgd2lkdGg9IjExNyI+PC9wPg==
- 答案:QQ==
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