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

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

题目如图所示电源电压保持不变灯泡L标有“6V 6W 字样当S和S1都闭合时电压表示数为10V当闭合S断开S1时灯泡L正常�光 sketch template

题目如图所示电源电压不变L1L2两个灯泡的规格相同闭合开关S当�动变阻器的�片P都从中点�右�动的过程中关于两灯的亮度情况 sketch template

如图所示电路的电源电压和灯泡电阻不变R1=5Ω灯L标有“8V 10Ω 字样8V是指灯泡正常工作时的电压超过此电压灯泡容易损坏电流 sketch template

如图所示电源电压9V保持不变当开关闭合时灯泡L1L2均正常�光电压表示数为3V则灯泡L1两端的电压是A．3V B．45V C sketch template

如图所示电源电压为12V且保持不变定值电阻R1为24Ω小灯泡上标有“6V 3W 字样．灯丝电阻不随温度改变．1求灯泡的额定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

2019学年九年级物理全册第十六章第2节串、并联电路中电压的规律习题新版新人教版 Word文档在线阅读与下载无忧文档 sketch template

百度教育 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

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

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

6．如图所示电源电压不变小灯泡标有“6V 3W 的字样 �动变阻器的�片P在中点时灯正常�光当�片P�b端 移动时下列说法正确的是 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

如图甲所示，电源电压保持不变，R1为定值电阻．当闭合开关S，�动变阻器�片P从a端移到b端，两电表示数变化关系用图乙线段AB表示．求：（1 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

如图所示电路中电源电压保持不变灯L标有“12V 12W 字样R2＝12Ω当S1S2都闭合时电流表示数为12A这时灯L正常�光 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

如图所示的电路中电源电压保持不变当开关S闭合后只有一个电表的示数�生变化若电路中只有一处故障且只�生在电阻R或小灯泡L上则可能是A sketch template

如图所示电路电源电压为3V两个相同规格的灯泡L1和L2它们的电阻均为6欧姆．闭合开关时�现灯泡L1亮而L2不亮此时电压表V1的示数为 sketch template

如图甲所示电路，电源电压恒为6V，�动变阻器R的规格为“25Ω、1A”，电流表量程选择“0∼06A”，电压表量程选择“0∼3V”，小灯泡上标 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图像如图b所示根据图像的信息可知 是电压表 sketch template

如图所示电源电压保持不变闭合开关S1S2电压表示数为6V电流表示数为06A断开S2后电压表示数变为2V则R2的电阻和电源电压 sketch template

如图所示电路中电源电压U=45V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

如图1所示先后用不同的交流电源给同一盏灯泡供电．第一次灯泡两端的电压随时间按正弦规律变化如图2甲所示第二次灯泡两端的电压变化规律如图2乙 sketch template

题目如图所示电路中电源电压保持不变闭合开关S后将�动变阻器R的�片P�左移动在此过程中 A电压表V1示数变小电压表V2示 sketch template

电路如图题342所示，电源vs为正弦波电压，试绘出负载RL两端的电压波形，设二极管是理想的。上学吧找答案 sketch template

如图所示电源电压保持不变电阻R1=4ΩR2=8Ω合上电键S电压表示数为2V电流表示数为075A．求1通过R2的电流I22 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电路电源电压恒为6V定值电阻R1为10Ω�动变阻器R2的规格为“20Ω 05A 电压表量程为0 3V电流表量程为0 0 sketch template

4．如图所示电源两极间电压为6V开关S闭合后三只灯都不亮．用电压表逐段测量结果是由此可判断�生开路部分可能是． A．电路的部分 sketch template

如图8所示的电路电源电压保持不变闭合开关S调节华东 变阻器两电压表的示数随电路中电流变化的图线如图9所示根据图线的信息可知 是电压 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03A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

3．如图所示电源电压为6VR1=10Ω．当开关S断开时电流表示数为01A则R2= Ω电压表示数为 V当开关S闭合时电流表示数为 sketch template

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