如图所示电源电压为12v且保持不变电阻r1=20Ω�动变阻器r2的最大阻值为20Ω则当�动片p在�动变阻器上�动时电流表电压表上 Sketch Coloring Page

如图所示电源电压为12v且保持不变电阻r1=20Ω�动变阻器r2的最大阻值为20Ω则当�动片p在�动变阻器上�动时电流表电压表上 Template

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tomski如图所示电源电压为12v且保持不变电阻r1=20Ω�动变阻器r2的最大阻值为20Ω则当�动片p在�动变阻器上�动时电流表电压表上 coloring

如图所示电源电压保持12V不变小灯泡L上标有“6V3W 字样�动变阻器最大阻值R=60Ω．不考�温度对灯丝电阻的影响下列说法正确的是 sketch template

如图甲所示电源电压保持不变小灯泡的额定电压为12V�动变阻器的最大阻值为15Ω闭合开关S后当�片P从最右端�左�动过程中电压表的示 sketch template

如图甲所示电源电压保持不变小灯泡的额定电压为12V．闭合开关S后当�片P从最右端�到最左端的过程中小灯泡的I U关系图象如图乙所示．则 sketch template

百度教育 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006A，电压表量程为0 sketch template

如图所示电源电压为12V且保持不变电阻R1=20Ω�动变阻器R2的最大阻值为20Ω则当�动片P在�动变阻器上�动时电流表电压表上 sketch template

如图甲所示电源电压保持不变小灯泡的额定电压为12V闭合开关S后当�片P从最右端�到最左端的过程中小灯泡的I﹣U关系图象如图乙所示 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

题目如图所示的电路中电源电压U=45V且保持不变定值电阻R1＝5Ω变阻器R2最大阻值为20Ω电流表量程为006A电压表 sketch template

电源、电阻、电流表与开关连接成如图所示的电路。已知电阻R=20Ω，电源的内阻r=10Ω，闭合开关S后，电流表示数I=050A。 sketch template

如图甲所示电路中电源电压保持不变初始时�动变阻器的�片P在最右端但由于�动变阻器某处�生断路合上开关后�片P�左�过一段距离后电流表才 sketch template

题目如图甲的电路中电源电压保持不变闭合开关后�片P由b端移到a端电流表示数I与电压表示数U的变化关系如图乙所示则可判断电源电压是 sketch template

在如图所示的电路中电源电压保持不变电流表的量程分别为0 06安和0 3安电压表的量程分别为0 3伏和0 15伏电阻R1和R2的阻值 sketch template

如图所示电路电源电压为6V且保持不变已知电阻 R 1的阻值为200Ω电阻 2的阻值为300Ω当�动变阻器的�片P从a端移到b端时 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

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所示的电路中电源电压保持不变 R0为定值电阻R为电阻箱闭合开关后在调节电阻箱R阻值的过程中电流表的示数I与R的关系如 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

13．如图5电源电压保持不变电阻R1＝R2 ＝R3要使电路变为R1R2并联应闭合开关此时电流表的示数为I1 要使R2R3 sketch template

题目如图所示的电路中电源电压U保持不变�动变阻器的最大阻值移动�动变阻器的�片P至b端闭合开关S1断开开关S2�动变阻器的功率 sketch template

如图1所示的电路电源电压保持不变．闭合开关S调节�动变阻器两电压表的示数随电路中电流变化的图线如图2所示．根据图线的信息可知是电压表 sketch template

如图甲所示电源电压保持不变R1=10Ω．当闭合开关S�动变阻器的�片P从a端移动到b端的过程中两电表示数变化关系用图乙的线段AB表示 sketch template

如图所示电源电压为l0V且保持不变已知�动变阻器的最大阻值为25Ω定值电阻R0为20Ω小灯泡上标有“6V 3W 字样求1灯泡 sketch template

如图a所示的电路中电源电压保持不变闭合开关s后�动变阻器的�片P由B端移动到A端时测得电阻R1两端的电压与通过电阻R1的电流的变化关系 sketch template

题目在图a所示电路中电源电压为24伏且保持不变电阻R1的阻值为20欧�动变阻器R2标有“1A 字样电压表V的表盘如图b所示 sketch template

电阻串联分压公式 电阻分压计算公式 CSDN博客 sketch template

如图甲所示电源电压为U保持不变R0为定值电阻．闭合开关电流表A的示数为I电压表V1的示数为U1电压表V2的示数为U2．移动�动变阻器 sketch template

题目如图电路电源两端电压为45V且保持不变．电阻R1为10Ω�动变阻器R2的铭牌上标有“20Ω 1A 的字样电流表的量程为00 sketch template

如图所示电源电压是5 V且不变闭合S后电压表示数为1 V则灯L1两端的电压为 V灯L2两端的电压为 V灯L1L2的电阻相比较大的是 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

如图所示的电路中电源电压保持不变R为定值电阻当开关闭合时标有“6V 3W 的小灯泡L恰好正常�光若保持R不变将L换成另一只标有 sketch template

小明应用如图甲所示的电路“探究定值电阻R0的�热功率P0�动变阻器R消耗的电功率PR和电源总功率PU随电流I变化的关系将得到的数据绘成a sketch template

在如图所示的电路中电源电压保持不变闭合开关S当�动变阻器的�片�右移动时则 A．电压表的示数变大B．电流表的示数变大C．电阻R的功率不 sketch template

26．如图所示电源电压为12V且保持不变己知�动变阻器R3的最大阻值为20Ω定值电阻R1 = 10ΩR2= 15Ω电流表的量程为0 sketch template

如图所示电路中电源电压U=45V且保持不变定值电阻R1=5Ω变阻器R2最大电阻为20Ω电流表量程为0 06A电压表量程为0 sketch template

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