如图所示r2是0 50的�动变阻器闭合开关后电压表示数为6v电流表a1的示数为05a电流表a2的示数是20a求——青夏教育 Sketch Coloring Page

如图所示r2是0 50的�动变阻器闭合开关后电压表示数为6v电流表a1的示数为05a电流表a2的示数是20a求——青夏教育 Template

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tomski如图所示r2是0 50的�动变阻器闭合开关后电压表示数为6v电流表a1的示数为05a电流表a2的示数是20a求——青夏教育 coloring

如图所示R2是0 50的�动变阻器闭合开关后电压表示数为6V电流表A1的示数为05A电流表A2的示数是20A求——青夏教育 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006A，电压表量程为0 sketch template

百度教育 sketch template

如图所示R2是0 50的�动变阻器闭合开关后电压表示数为6V电流表A1的示数为05A电流表A2的示数是20A求——青夏教育 sketch template

如图所示R2为0 50Ω的变阻器合上开关后V1的示数为6VA表的示数为2AA1的示数为05A则变阻器R2连入电路部分的阻值是 sketch template

电源电压18VR2是0 50Ω的�动变阻器合上开关S电流表示数05A电压表示数5V求�电阻R1 �变阻器R2接入电路的电阻值 � sketch template

百度教育 sketch template

如图所示电源电压为3VR2=10Ω．开关闭合时通过R1的电流为02A．求1R1的电阻2通过R2的电流3电路的总功率 sketch template

在如图所示的电路中R1=10 ΩR2=20 Ω�动变阻器R的阻值为050 Ω当�动触头P由a�b�动的过程中灯泡L的亮度变化情况是 sketch template

如图a所示电路电源电压保持不变�动变阻器R2上标有“50W 2A 字样闭合电键后当�片位于中点位置时电流表A1和A2的示数均如图 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（00 6A）、出卷� sketch template

如图a所示电路电源电压保持不变�动变阻器R2上标有“50W 2A 字样闭合电键后当�片位于中点位置时电流表A1和A2的示数均如图 sketch template

如图所示的电路电压U保持不变．R1=12Ω�动变阻器R2标有“10Ω 2A 的字样．�动变阻器的�片P在最右端时通过电阻R1的电流为0 sketch template

题目如图所示的电路中电源电压不变R1 为定值电阻R2为�动变阻器闭合开关 S 后在�片P从最左端�中点移动的过程中下列说法正确 sketch template

电源、电阻、电流表与开关连接成如图所示的电路。已知电阻R=20Ω，电源的内阻r=10Ω，闭合开关S后，电流表示数I=050A。 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

如图所示电路电源电压为18伏且保持不变�动变阻器R2上标有“50W 1A 字样闭合电键S移动�片当电流表示数为08安电压表V2的 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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

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R1R2产生的热量之比为 A 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R1R2的U I图象．小明利用R1R2两个电阻设计了如图乙所示的实验电路此时 sketch template

如图所示的电路中电源电压保持不变R1为定值电阻R2为�动变阻器．闭合开关S时当�片P在某一端点时电流表示数为01AR2消耗的电 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

在如图所示电路中电源电压不变．�动变阻器R2上标有“50欧 3安字样当S闭合S1断开�动变阻器的�片P在最右端位置时电流表A的示数 sketch template

如图所示的电路R1=30ΩR2=10Ω开关S闭合后电流表A的示数为04A求1电源电压U2通过R2的电流3整个电路 sketch template

如图所示R1和R2是材料相同厚度相同表面为正方形的导体但R2的尺寸比R1小很多．若将两导体串接入同一电路通过两导体的电流方�如图所示 sketch template

如图所示R1=5ΩR2=10Ω则电压表v1v2示数之比是 A． 12 B． 21 C． 13 D． 31 题目和参考答案 sketch template

在如图所示的电路中电源电压恒定R1为定值电阻R2为�动变阻器．开关S闭合后当�动变阻器的�片P在ab之间�动的过程中电压表的示数 sketch template

如图所示电路中电源电压不变R1 为定值电阻R2 为�动变阻器．闭合开关 S当�片 P 在某一端点时电压表示数为 10VR2 消耗 sketch template

如图所示电路中电源电压为8伏且不变�动变阻器R2上标有“50Ω 15A 字样两电表为学校实验室常用电表闭合电键S移动�片到某位置时 sketch template

如图所示电源电压 U=12V电阻R1=100Ω变阻器R2的最大电阻值是60Ω闭合开关S当�片P从R2的左端移到右端的过程中电压表 sketch template

如图所示电源电压为3VR2=10Ω．开关闭合时通过R1的电流为02A．求1R1的电阻2通过R2的电流3电路的总功率 sketch template

如图甲所示电源电压为6V恒定不变�动变阻器R2最大阻值是20Ω．闭合开关�动变阻器的P R图象如图乙所示则R1=10Ω当�片P�至最 sketch template

题目如图所示电源电压保持不变闭合开关后当�动变阻器的�片由左�右移动时下列判断正确的是A 电压表示数变大B 电流表示数变大C sketch template

如图甲所示电源电压为6V恒定不变�动变阻器R2最大阻值是20Ω．闭合开关�动变阻器的P R图象如图乙所示．当�片P�至最右端时电流表的 sketch template

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