如图所示r2是0 50的�动变阻器闭合开关后电压表示数为6v电流表a1的示数为05a电流表a2的示数是20a求——青夏教育 Sketch Coloring Page

如图所示r2是0 50的�动变阻器闭合开关后电压表示数为6v电流表a1的示数为05a电流表a2的示数是20a求——青夏教育 Template

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tomski如图所示r2是0 50的�动变阻器闭合开关后电压表示数为6v电流表a1的示数为05a电流表a2的示数是20a求——青夏教育 coloring

如图所示R2是0 50的�动变阻器闭合开关后电压表示数为6V电流表A1的示数为05A电流表A2的示数是20A求——青夏教育 sketch template

如图所示，电源电压恒为18V，定值电阻R1=20Ω，�动变阻器R2标有“40Ω 05A”，电流表A的量程为006A，电压表量程为0 sketch template

如图所示R2是0 50的�动变阻器闭合开关后电压表示数为6V电流表A1的示数为05A电流表A2的示数是20A求——青夏教育 sketch template

百度教育 sketch template

百度教育 sketch template

如图所示的电路图是用来研究通过导体的电流跟导体电阻关系的，其中R1与R2为阻值不同的定值电阻，第一次实验用的定值电阻为R1 ， 闭合开关后，记 sketch template

如图甲所示电路中R1是�动变阻器R2是定值电阻电源两端电压保持不变．当�动变阻器�片P从最右端�到最左端电压表示数随电流变化的图象如图 sketch template

在如图所示的电路中R1=10 ΩR2=20 Ω�动变阻器R的阻值为050 Ω当�动触头P由a�b�动的过程中灯泡L的亮度变化情况是 sketch template

如图所示电源电压为3VR2=10Ω．开关闭合时通过R1的电流为02A．求1R1的电阻2通过R2的电流3电路的总功率 sketch template

题目如图所示的电路中电源电压不变R1 为定值电阻R2为�动变阻器闭合开关 S 后在�片P从最左端�中点移动的过程中下列说法正确 sketch template

题目如图甲所示的电路中R2为定值电阻�动变阻器R1标有“20Ω 1A 字样电流表量程为0﹣06A灯泡L正常工作的电流是05A sketch template

题目如图甲所示电源电压为6V恒定不变�动变阻器R2最大阻值是20Ω闭合开关�动变阻器的P R图像如图乙所示则R1= Ω当�片P sketch template

如图所示的电路中电源的电压保持不变R1为定值电阻R2为�动变阻器闭合开关S�片P�右移动时则A．电流表A的示数变大B．电压表V的示 sketch template

如图甲所示是某兴趣小组在“伏安法测电阻实验中分别作出R1R2的U I图象．小明利用R1R2两个电阻设计了如图乙所示的实验电路此时 sketch template

如图所示的电路电压U保持不变．R1=12Ω�动变阻器R2标有“10Ω 2A 的字样．�动变阻器的�片P在最右端时通过电阻R1的电流为0 sketch template

如图1所示的电路中R1为定值电阻R2为�动变阻器电源电压不变．闭合开关S后�片P从a端移动到b端电流表示数I与电压表示数U的变化关系 sketch template

如图甲所示的电路中电源电压恒定不变R2=30Ω通过R1的电流随它两端电压变化关系如图乙所示则下列计算正确的是A．R1的阻值大小是 sketch template

两个定值电阻R1、R2并联在电路中如图甲所示它们的电流与其两端的电压关系如图乙所示闭合开关S则R1R2产生的热量之比为 A sketch template

题目如图甲所示R1为定值电阻�动变阻器R2的�片从a端�到b端的过程中R2消耗的电功率P与其两端电压U的关系如图乙所示则�动变阻器 sketch template

如图所示电路电源电压为18伏且保持不变�动变阻器R2上标有“50W 1A 字样闭合电键S移动�片当电流表示数为08安电压表V2的 sketch template

如图所示，两个同心的均匀带电球面，内球面半径为R1、带电荷Q1，外球面半径为R2、带有电荷Q2．无穷远处为电势零点，求：1空间的电场强度 sketch template

如图甲所示的电路在�动变阻器R2的�片P从B�A�动的过程中电压表与电流表示数的变化关系如图乙所示则下列说法中正确的是 A．当电流表 sketch template

人教版物理九年级上第十七章第二节细化知识点同步练习——欧姆定律的图像问题（1）在线组卷 sketch template

如图所示电源电压保持不变．�动变阻器R2的�片P在移动过程中电压表的示数变化范围是0 4伏电流表的示数变化范围是05 1安求电源 sketch template

题目如图甲所示的电路中�动变阻器的�片P从a端移到b端定值电阻R1两端的电压随�动变阻器R2阻值变化的图象如图乙所示R2的总阻值为 sketch template

如图2所示的电路中电源电压不变开关闭合后若�动变阻器的�片P�右端移动则 A电压表的示数和电流表的示数都增大 B电压表的示数和电流 sketch template

如图甲所示的电路中电源电压恒定不变R2=30Ω通过R1的电流随它两端电压变化关系如图乙所示则下列计算正确的是A．R1的阻值大小是 sketch template

如图2所示的电路中电源两端电压为6V并保持不变定值电阻R1的阻值为10�动变阻器R2的最大阻值为50当开关S闭合�动变阻器的�片P由 sketch template

5．如图所示已知电阻R1=3ΩR2=6Ω电流表A的示数是06A 则电流表A1的示数是 A．01A B．02A C．04A sketch template

如图甲所示电路电源两端电压不变．R1是�动变阻器R2是定值电阻．当开关S闭合后逐步改变�动变阻器接入电路的电阻值根据电压表与电流表的示 sketch template

如图所示的电路中，电源电压保持不变。闭合开关S后，�片P从b端移动到a端的过程，电压表示数U与电流表示数I的关系图像如图所示。下列说法正确的是（ sketch template

如图所示电源电压不变当开关S1S2同时闭合时电流表的示数是03A电压表示数是6V．若两表互换位置当开关S2闭合S1断开时电流 sketch template

如图所示R1R2是两定值电阻R1的阻值很小R2的阻值很大G是一灵敏电流计S1S2为开关下列判断正确的是 A．只闭合S1时 sketch template

8．如图所示电路R2=24ΩR1是0 20Ω的�动变阻器电源电压U=6V且保持不变．当闭合开关S后通过R2的电流为 A．如果电流表 sketch template

如图所示电路中电源电压不变R1为�动变阻器R2为定值电阻开关S闭合后当�片P在变阻器的两端AB之间�动的过程中电压表的最大示数为 sketch template

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