8．在如图甲所示的电路中电阻r的阻值为50Ω在ab间加上图乙所示的正弦交流电则下面说法中正确的是 A．交流电压的有效值为100v Sketch Coloring Page

8．在如图甲所示的电路中电阻r的阻值为50Ω在ab间加上图乙所示的正弦交流电则下面说法中正确的是 A．交流电压的有效值为100v Template

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anonymous
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anonymous

anonymous
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Ainhoa White
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anonymous

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tomski8．在如图甲所示的电路中电阻r的阻值为50Ω在ab间加上图乙所示的正弦交流电则下面说法中正确的是 a．交流电压的有效值为100v coloring

8．在如图甲所示的电路中电阻R的阻值为50Ω在ab间加上图乙所示的正弦交流电则下面说法中正确的是 A．交流电压的有效值为100V sketch template

小红用如图甲所示的实验电路“探究电流与电阻的关系”，实验中所用定值电阻的阻值分别为各一个。（1）电路图中�动变阻器的作用是和控制定值电阻两端 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

在如图甲所示的电路中，电阻，圆形�属线圈半径为，线圈导线的电阻也为R，半径为的圆形区域内存在垂直于线圈平面�里的匀强磁场。磁感应强度B随时间t sketch template

百度教育 sketch template

在如图甲所示的电路中 电源电压为12伏。闭合开关S 电流表、的示数分别为0 3安、2 3安。（1）求通过电阻电流出卷� sketch template

如图2所示电路图中定值电阻和�动变阻器R串联两端的电压分别为当�动变阻器的�片P�右�动过程中 A 变小也变小 B 变小不变 sketch template

题目如图甲所示把电阻R与灯L接在3V的电源上电阻R与灯L的U I图象如图乙所示当S闭合时电路总电阻为 ΩL消耗的功率为 W通电 sketch template

如图甲所示的电路中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

在如图甲所示的电路中R0为定值电阻R为�动变阻器电源电压不变闭合开关S后调节�片P从a端移动到b端过程中电流表示数I与电压表示数U sketch template

题目在如图a所示的电路中R1为定值电阻R2为�动变阻器闭合开关S将�动变阻器的�动触头P从最右端�到最左端两个电压表的示数随 sketch template

题目如图所示电路电源电压为6 V当S断开时电流表的示数为1 AS闭合时电流表的读数为15安求1电阻R1的阻值2 sketch template

如图甲所示是两电阻R1R2各自的U I图线求1电阻R1的阻值为多大 2如果把R1R2两个电阻串联接成如图乙所示的电路时 sketch template

题目在如图甲所示的电路中电源电压U＝4V电阻R1＝20Ω闭合开关S当�动变阻器的�片P移至某处时电路中电流表A的示数如图乙所示 sketch template

题目在如图甲所示的电路中电源电压为6V且保持不变电阻R1的阻值为30Ω同时闭合开关S和S1电流表的读数如图乙所示求1通过 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�动变阻器．闭合开关S后在移动�片P的过程中电流表的示数I与R的阻值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R1R2产生的热量之比为 A 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

在如图甲所示的电路中，电源电压U保持不变，R1、R2为定值电阻，R为�动变阻器，闭合开关S，将�动变阻器的�片P从最右端�到最左端的过程中 sketch template

百度教育 sketch template

如图甲所示，一个电阻、边长、匝数为匝的正方形线圈，高途 sketch template

4．在如图a所示的电路中R1为定值电阻 R2为�动变阻器闭合电键S将�动变阻器的�动触头P从最右端�到最左端两个电压表的示数 sketch template

如图甲所示的电路中电源电压保持不变闭合开关S后�动变阻器�片P由B端移动到A端时测得电阻R1两端电压与通过电阻R1的电流的变化关系如图 sketch template

如图甲所示的电路图中电源电压为12V电阻R1的I U图象如图乙所示．当闭合开关�动变阻器R接入电路的阻值为40Ω时则下列选项正确的是 sketch template

多选如图甲所示电阻R的阻值为50Ω在ab间加上图乙所示的正弦交流电则下面说法中错误的是A．电阻R的功率为400W B．电流表示数为2A sketch template

百度教育 sketch template

百度教育 sketch template

11．如图所示甲图中变阻器的�片从一端�到另一端的过程中两电表的读数随电流表读数的变化情况如乙图中的ACBC两直线所示．不考� sketch template

如图甲所示的电路在�动变阻器R2的�片P从B�A�动的过程中电压表与电流表示数的变化关系如图乙所示则下列说法中正确的是 A．当电流表 sketch template

如图甲所示的电路中电源电压不变R1为定值电阻闭合开关S将�动变阻器R2的�片P从a�b移动的过程中电压表和电流表的示数变化情况如图乙 sketch template

如图甲所示的电路中定值电阻R1为10ΩR2为�动变阻器电源电压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 sketch template

8．如右图所示的电路中电阻R1=10ΩR3=5ΩR4=10Ω电容器电容C=2μF电源电动势E=15V内阻不计要使电容器不带有电 sketch template

某物理兴趣小组同学设计了如图甲所示的电路图进行实验探究电源为可调压直流学生电源电压表量程为“0 15V 电流表量程为“0 06A sketch template

如图甲所示电路电源电压保持不变当闭合开关S调节�动变阻器阻值从最大变化到最小两个电阻的“U I 关系图象如图乙所示则电源电压为 V 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

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