如图所示的电路中当ab两点间接入4Ω的电阻时其消耗的功率为16w．当ab两点间接入9Ω的电阻时其消耗的功率仍为16w．求1ab两点 Sketch Coloring Page

如图所示的电路中当ab两点间接入4Ω的电阻时其消耗的功率为16w．当ab两点间接入9Ω的电阻时其消耗的功率仍为16w．求1ab两点 Template

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tomski如图所示的电路中当ab两点间接入4Ω的电阻时其消耗的功率为16w．当ab两点间接入9Ω的电阻时其消耗的功率仍为16w．求1ab两点 coloring

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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

百度教育 sketch template

如图甲所示是小明“探究电流与电压、电阻的关系”的实验电路图。选用的实验器材是：电源3V、电流表（00 6A）、出卷� sketch template

如图所示电源电压恒定�动变阻器的规格为“30Ω 1A 在AB间接入规格为“12V 12W 的灯泡闭合开关当变阻器的五分之一阻值连入 sketch template

题目如右图所示家庭电路中当开关S闭合后灯泡L不亮用试电笔测试cd两点时氖管都�光测试ab两点时只有a点氖管�光则故障可能 sketch template

如图所示的电路中当ab两点间接入4Ω的电阻时其消耗的功率为16W．当ab两点间接入9Ω的电阻时其消耗的功率仍为16W．求1ab两点 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

如图所示电路电源电压为6V电阻R2为10Ω�动变阻器R1的最大阻值是20Ω当�片P移到a端时电压表读数是6V当�片P移到b端时 sketch template

如图所示的电路中电源两端的电压保持不变闭合开关SS1当�片P 移至�动变阻器R2的A端时电压表V1的示数为U1电压表V2的示数为 sketch template

12．在如图所示的电路中电源电压恒定为U电键闭合后将�动变阻器R2的�片P�左�动时电路中的小灯泡L1L 2和L 3的亮度变化情况是 sketch template

如图所示的电路中当ab两点间接入4Ω的电阻时其消耗的功率为16W当ab两点间接入9Ω的电阻时其消耗的功率仍为16W求 �ab两点 sketch template

在如图所示的电路中，电源电压保持不变，定值电阻R1的阻值为10Ω，�动变阻器R2上标有“2A”字样。闭合开关S，移动�片P至电路中的电流最大 sketch template

如图所示电路中电源电压不变R1为定值电阻R2为�动变阻器．闭合开关S当�片P在某一端点时电流表示数为01AR2消耗的电功率为lW sketch template

如图所示的电路中电源电压保持不变当开关闭合�片由b端�a端移动的过程中以下说法正确的是 A．电压表的示数减小电流表的示数增大B sketch template

在如图1所示电路中当闭合开关后两个电压表指针偏转均为图2所示则电源电压是66V电阻R1两端的电压是4848VR2两端的电压是1 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

题目如图所示的电路中电源电压保持不变闭合开关S将�动变阻器的�片P�左移动下列说法中正确的是A电压表的示数不变电流表A1的示数 sketch template

百度教育 sketch template

如图所示的电路中电源电压保持不变．当�动变阻器的�片P�右�动时 电流表和电压表的示数变化情况是 A．电流表和电压表的示数都变大 sketch template

如图所示的电路中电源电压不变闭合开关S当�动变阻器的�片P从A�B�动时下列说法正确的是 A．电压表V1的示数变大B．电压表V2的 sketch template

在如图所示的电路中电源电压为12伏且保持不变定值电阻R1的阻值为20欧�动变阻器R2上标有“20Ω 1A 字样．闭合电键S电压表示数为 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R1R2产生的热量之比为 A sketch template

小敏用如图甲所示的电路图研究通过导体的电流与导体电阻的关系电源电压恒为6V改变电阻R的阻值调节�动变阻器�片保持R两端的电压不变记 sketch template

如图所示的电路中当ab两点间接入4Ω的电阻时其消耗的功率为16W当ab两点间接入9Ω的电阻时其消耗的功率仍为16W求 �ab两点 sketch template

如图所示的电路当在AB两点间接一只10Ω的电阻时电流表的示数为05A．在AB两点间换接一只20Ω的电阻此时电流表的示数为A等于0 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3所示的电路中电源电压为12V定值电阻R=4Ω�动变阻器R0的最大阻值为6Ω移动�片P的位置使电流增加电流表最大的示数可达 A 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a端移动到b端时测得电阻R两端的电压U与通过R的电流I的变化关系 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

如图所示的电路中各个电阻都是2Ω电流表内阻不计在BC两点间加6V电压时则电流表的示数为 A．1 AB．05 AC．15 AD sketch template

如图所示的电路中若同时闭合开关S1和S3、断开S2电阻R1与R2是 的若只闭合开关S2电阻R1和R2是 的均选填 sketch template

如图所示的电路中R1=2Ω现将R1换成4Ω的电阻R2为保持电压的示数不变�动变阻器的�片P应该 A．�a端�动B．�b端�动C．保持原位不 sketch template

在如图所示的电路中电源电压不变．开关S闭合后移动�片P改变�动变阻器接入电路的阻值使电压表的示数从6V变化到2V同时观察到电流表的示 sketch template

题目如图甲所示的电路中电源电压保持不变．闭合开关将变阻器�片从一端移动到另一端的过程中两只电压表与电流表示数的变化关系图线如图乙所示 sketch template

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