27．如图所示的电路电源电压和灯丝电阻保持不变开关s闭合后在�动变阻器�片�左�动过程中电压表v的示数 电流表a1的示数 电流表 Sketch Coloring Page

27．如图所示的电路电源电压和灯丝电阻保持不变开关s闭合后在�动变阻器�片�左�动过程中电压表v的示数 电流表a1的示数 电流表 Template

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tomski27．如图所示的电路电源电压和灯丝电阻保持不变开关s闭合后在�动变阻器�片�左�动过程中电压表v的示数 电流表a1的示数 电流表 coloring

如图所示，甲同学在做“测量小灯泡的电功率”实验。实验器材：电源（电压恒为6V）、小灯泡（额定电压为25V，正常�光时灯丝电阻约为10Ω sketch template

百度教育 sketch template

如图2所示电路，当开关S闭合后，L1、L2均能�光，电流表、电压表均有示数．过一会儿，两灯都不�光．电流表、电压表的示数均为零，可能�生的故障 sketch template

如图所示电路中电源两端的电压和灯丝的电阻均保持不变定值电阻R1=25Ω．只闭合开关S1时灯L正常�光只闭合开关S3时灯L的实际功率为 sketch template

27．如图所示的电路电源电压和灯丝电阻保持不变开关S闭合后在�动变阻器�片�左�动过程中电压表V的示数 电流表A1的示数 电流表 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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

百度教育 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

题目如图所示的U I图象中直线Ⅰ为某电源的路端电压与电流的关系图线直线Ⅱ为某一电阻R的U I图线用该电源直接与电阻R连接成闭合电路 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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

如图所示的电路中，电源两端电压保持不变，电阻R2的阻值为20Ω．闭合开关后，电压表的示数为2V，电流表的示数为02A，求：1电阻R1的 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

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a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图象如图b所示根据图象的信息可知是电压 sketch template

在如图所示的电路中电源两端的电压保持不变 当只闭合开关S和S1时灯L1正常�光电压表V1 的示数U1与电压表V2的示数U2之比U1 sketch template

在如图所示的电路中电源两端的电压保持不变在开关S1闭合的情况下开关S2闭合后与S2断开时相比电流表电压表示数的变化下列说法中正确的 sketch template

如右图所示电路中电源电压保持不变闭合开关S后将�动变阻器R2的�片P�右移动在此过程中 A．电压表V1示数不变电压表V2示数变大B 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

在如图所示的电路中电源电压保持不变下列说法正确的是 A．只闭合开关S1变阻器�片�左移动时电压表V1无示数电压表V2与电流表A示 sketch template

如图所示电路电源电压保持不变闭合开关S当�动变阻器的�片P从b端�a端�动时 A．电流表A示数变大电压表V1变大B．电流表A示数变 sketch template

如图所示的电路中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电阻R的电流I的变化关系如 sketch template

如图所示为了测量电源的电动势将电压表V1V2串联接到电源两端时示数分别为6V和4V当只有电压表V2接到电源两端时如图乙所示示数为 sketch template

题目如图所示的电路电源电压恒为6VL1标有“6V 72W 的字样L2标有“6V 36W 的字样忽略温度对灯丝电阻的影响下列 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．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

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

如图所示的电路电源电压保持不变定值电阻R2为5Ω．闭合开关S后电压表示数为4V电流表示数为04A．求1R1的阻值2电源 sketch template

在如图所示的电路中电源电压保持不变电阻R1 的阻值为20Ω闭合开关S电流表A1的示数为03A电流表A 的示数为05A．求1 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两端的电压保持不变闭合开关SS1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

如图所示电路中电源电压恒为12V电流表A1A2的量程分别为06A3A�动变阻器R2标有“2A 50Ω 字样将�动变阻器�片P调到 sketch template

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