2．如图甲所示电阻r的阻值为50Ω在ab间加上图乙所示的正弦交流电交流电表内阻不计则下面说法中正确的是 A．电阻r的功率为 Sketch Coloring Page

2．如图甲所示电阻r的阻值为50Ω在ab间加上图乙所示的正弦交流电交流电表内阻不计则下面说法中正确的是 A．电阻r的功率为 Template

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sketch #3760 PSY by Juvenilia Alexandrino

anonymous

anonymous
sketch #3760 PSY by Juvenilia Alexandrino

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sketch #2645 Flowers in window

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anonymous
sketch #3604 Falling Manipati Surya

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anonymous

anonymous
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sketch #1034 what ever you want it to be

anonymous

anonymous
sketch #1034 what ever you want it to be

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sketch #2573 homer simpson

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Jorge Valero
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tomski2．如图甲所示电阻r的阻值为50Ω在ab间加上图乙所示的正弦交流电交流电表内阻不计则下面说法中正确的是 a．电阻r的功率为 coloring

“探究电流与电阻关系”的实验实物图如图甲所示，定值电阻的阻值分别为5Ω、10Ω、15Ω、20Ω。（1）连接电路时�现，电路中有一根导线连接错误 sketch template

2．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交流电表内阻不计则下面说法中正确的是 A．电阻R的功率为 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

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

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

小灯泡L和定值电阻R接在如图甲所示的电路中其两者的I U关系图象如图乙所示下列说法中正确的是 A 图乙中曲线A表示电阻R的I U 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

19．如图15甲所示一个电阻值为R匝数为n的圆形�属线圈与阻值为2R的电阻R1连接成闭合回路线圈的半径为r1在线圈中半径为r2的圆形 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

题目如图甲所示电阻R＝10Ω闭合开关�动变阻器的�片从a端移动到b端的过程中电流表示数变化范围为06A 01A在图甲电路的 sketch template

如图甲所示R1为�动变阻器R0R2为定值电阻电源电压U保持不变．建立直角坐标系横轴表示电流纵轴表示电压．改变�动变阻器�片P的位置 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如图甲所示的电路中电源电压保持不变 R0为定值电阻R为电阻箱闭合开关后在调节电阻箱R阻值的过程中电流表的示数I与R的关系如 sketch template

题目用如下图甲所示的电路“探究电流与电阻的关系电源电压恒为6V定值电阻R备有5Ω10Ω20Ω40Ω各一个1闭合开关前 sketch template

题目如图甲所示电路�动变阻器的最大阻值为R1=40Ω电源电压及灯L的电阻保持不变当S1S2均闭合且�片�到b端时电流表A1A2 sketch template

如图所示电源电压保持恒定电阻R的阻值与�动变阻器最大阻值之比为23当S1闭合S2断开�动变阻器的�片P在AB的中点时小灯泡所消耗 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

19．如图所示电源电压U及电阻R1均为恒定值当与R1 串联的可变电阻R2分别被调为8Ω和2Ω时可变电阻R2的功率都是2W则R1的阻值为 sketch template

如图甲所示是阻值为5Ω的线圈与阻值为15Ω的电阻R构成的回路线圈在匀强磁场中绕垂直于磁场方�的轴匀速转动产生的电动势随时间变化的规律如图乙 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如图所示是电阻甲和乙的I﹣U图象下列说法正确的是A 电阻乙为定值电阻B 当电阻甲两端电压为2 V时R甲=04ΩC 只将电阻 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

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

32．图20甲所示的电路中R1为�动变阻器ROR2 均为定值电阻电源两端电压保持不变改变�动变阻器R1的�片位置两电压表的示数随 sketch template

百度教育 sketch template

11．如图所示电阻R1=8Ω直流电动机的内电阻R2=2Ω当电键S断开时电阻R1消耗的电功率为288W电源的效率为80%当电键S sketch template

为测某电阻R的阻值分别接成图所示的甲乙两电路在甲电路中电压表和电流表的示数分别为28V4mA乙电路中两表示数分别为26V和5mA sketch template

如图甲所示是某兴趣小组在“伏安法测电阻 实验中分别作出R1R2的U I图象．小明利用R1R2两个电阻设计了如图乙所示的实验电路此时 sketch template

在如图甲所示的电路中当闭合开关后两个电流表指针偏转均为图乙所示则电阻R1和R2中的电流分别为 A．12A022AB．098 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

如图甲所示电路可变电阻R2的�片P从左�右�动过程中电压表与电流表的示数�图乙所示的规律．则可变电阻R2接入电路的阻值变化范围是 电源 sketch template

如图a所示电阻R1的阻值为30欧当只闭合电键S1电流表的指针位置如图b所示电流表换用另一量程后再闭合电键S1S2后电流表 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

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