13．如图4所示电源电压和灯泡电阻都保持不变当�动变阻器的�片p由中点�右移动时下列判断不正确的是 A．电流表和电压表的示数都增大 B Sketch Coloring Page

13．如图4所示电源电压和灯泡电阻都保持不变当�动变阻器的�片p由中点�右移动时下列判断不正确的是 A．电流表和电压表的示数都增大 B Template

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tomski13．如图4所示电源电压和灯泡电阻都保持不变当�动变阻器的�片p由中点�右移动时下列判断不正确的是 a．电流表和电压表的示数都增大 b coloring

13．如图甲所示为一个小灯泡的两端电压与通过它的电流的变化关系曲线 1若把三个相同这样的灯泡串联后接到电压恒定的12V电源上求流过小 sketch template

如图甲所示是“测定小灯泡电功率”实验的装置图，电源电压为4V且保持不变，小灯泡额定电压为25V，阻值约为9Ω，�动变阻器标有“20Ω 1A”字样。 sketch template

13．如图4所示电源电压和灯泡电阻都保持不变当�动变阻器的�片P由中点�右移动时下列判断不正确的是 A．电流表和电压表的示数都增大 B sketch template

题目2016·厦门卷如图所示R1=25Ω小灯泡L的规格为“2．5V 0．3A 电源电压保持不变1S1S2都断开时小灯泡 sketch template

小明用如图1所示的电路图测小灯泡电阻．已知电源电压3V待测小灯泡额定电压为25V猜想电压表示数电流表示数灯泡断路灯泡短路1当开关 sketch template

如图1甲电路所示电源电压为9V且保持不变小灯泡标有“6V6W 的字样小灯泡的电流随电压的变化曲线如图乙．1当电流表的示数为05A sketch template

如图1所示的电路中电源电压不变小灯泡的额定电压为25V图2是该小灯泡I U图象变阻器的最大阻值R为30Ω．闭合开关S当�片P置于某 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

百度教育 sketch template

如图甲所示电源电压为45V且保持不变小灯泡上标有“25V 的字样图乙是通过小灯泡的电流与它两端的电压关系的图像．求1当小灯泡 sketch template

如图所示把标有“6V 3W 的小灯泡与最大阻值为100Ω的�动变阻器连接在电源电压恒为18V的电路中各表的示数均不超过所选量程且灯泡两端 sketch template

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题目如图所示电源电压为6V小灯泡标有“4V 16W 的字样定值电阻R=20Ω不考�温度对灯丝电阻的影响�动变阻器上标有“0 sketch template

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

中考物理知识点：测量小灯泡的电阻 欧姆定律中考� sketch template

如图10所示的电路中电源电压不变闭合开关S电路正常工作过了一会儿两电表的示数都变大则该电路中出现的故障可能是 A灯泡L开路 sketch template

百度教育 sketch template

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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

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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

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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4所示当开关S闭合时灯L1L2均不亮某同学用一根导线探究其故障当把导线并接在灯L1两端时�现灯L2亮灯L1不亮当把导线并接在 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

电学易错题综合 Word文档在线阅读与下载无忧文档 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

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U1电压表V2的示数为U2．移动�动变阻器 sketch template

如图所示电源电压保持不变当闭合开关S�动变阻器的�片P�右移动的过程中下列说法正确的是A．电压表V1的示数增大电压表V2的示数减小B sketch template

如图9所示电源两端的电压为12V且保持不变电阻R1与 R2 的比值是4﹕1当开关S1闭合S2断开时10s内电流通过R1产生的热量是 sketch template

如图8所示电源电压12V电阻R阻值为2Ω电压表所选量程为 0 3V为了不损坏电压表变阻器凡的阻值应 A不高于2Ω B 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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

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