如图所示电源电压u保持不变�动变阻器的最大阻值为r2当变阻器的�片在a端时电压表读数为2v�片在b端时电压表读数为1v则r1 Sketch Coloring Page

如图所示电源电压u保持不变�动变阻器的最大阻值为r2当变阻器的�片在a端时电压表读数为2v�片在b端时电压表读数为1v则r1 Template

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tomski如图所示电源电压u保持不变�动变阻器的最大阻值为r2当变阻器的�片在a端时电压表读数为2v�片在b端时电压表读数为1v则r1 coloring

百度教育 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电路中电源电压U=45V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

在如图所示的电路中，电源电压保持不变，定值电阻R1的阻值为10Ω，�动变阻器R2上标有“2A”字样。闭合开关S，移动�片P至电路中的电流最大 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

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

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

如图1所示，电源电压保持不变，闭合开关时，�动变阻器的�片P从b端�到a端，电压表示数U与电流表示数I的变化关系如图2所示，下列说法不正确的是 sketch template

题目如图所示的电路中电源电压U=45V且保持不变定值电阻R1＝5Ω变阻器R2最大阻值为20Ω电流表量程为006A电压表 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

题目如图所示的电路中电源电压U保持不变�动变阻器的最大阻值移动�动变阻器的�片P至b端闭合开关S1断开开关S2�动变阻器的功率 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为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U保持不变�动变阻器的最大阻值为R2当变阻器的�片在a端时电压表读数为2V�片在b端时电压表读数为1V则R1 sketch template

如图所示电源两端电压保持不变当开关S1闭合S2断开�动变阻器的�片P移到B端时电阻R2的电功率为P2电流表的示数为I1当开关S1 sketch template

如图1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 关系图像如图2所示则下列判断正确的是 sketch template

如图所示的电路中电源电压保持不变闭合开关S后�动变阻器的�片P由a端移动到b端时测得电阻R两端的电压U与通过电阻R的电流I的变化关系如 sketch template

如图1所示电路电源电压U0不变初始时�动变阻器的�片P在最右端但由于�动变阻器某处�生断路闭合开关后�片P�左�过一段距离后电流表才有 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

如图所示电源电压U保持不变�动变阻器的最大阻值为R2当变阻器的�片在a端时电压表读数为2V�片在b端时电压表读数为1V则R1 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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电源两端电压保持不变当开关S1闭合S2断开�动变阻器的�片P移到B端时变阻器连入电路电阻为RB此时电流表的示数为I1电阻 sketch template

如图所示电源电压保持不变R0为定值电阻�动变阻器的最大阻值为R闭合开关S电压表的示数为U0．移动�片P使变阻器连入电路的阻值减小为 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

如图所示的电路中电源电压保持不变．R1为�动变阻器R2R3为定值电阻．闭合开关S将�片P由a端�b端�动一段距离后电压表V1V2示 sketch template

如图a所示的电路中电源电压保持不变闭合开关S后�动变阻器的�片P由a端移动到b端时测得电阻R两端的电压U与通过R的电流I的变化关系 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

如图所示的电路电源电压保持不变闭合开关�动变阻器�片�左移动电流表的示数将A．甲表示数变大乙表示数变大 B．甲表示数不变乙表示数变 sketch template

如图所示电路电源电压保持不变．闭合开关S当�动变阻器的�片P从a端�到b端的过程中两个电阻的U I关系图象如图所示．则下列判断正确的是 sketch template

如图所示电源两端的电压保持不变R0为定值电阻．将�动变阻器的�片P置于最右端闭合开关S．移动�动变阻器的�片P到某一位置此时�动变阻器 sketch template

如图所示的电路中电源电压保持不变�动变阻器的最大阻值为R3．若只闭合开关S1将�动变阻器的�片P置于A端时电压表V1示数为U1电压表 sketch template

如图所示电源电压为12V且保持不变电阻R1=20Ω�动变阻器R2的最大阻值为20Ω则当�动片P在�动变阻器上�动时电流表电压表上 sketch template

如图所示电源电压保持不变电阻R1＞R2电压表示数分别U1U2电流表A1A2的示数分别为I1I2则闭合开关时下列关系中正确的是 A sketch template

如图所示电源电压保持不变闭合开关S当�动变阻器的�片P�右�动时电压表的示数U与电流表的示数I变化情况正确的是 A U变大I变 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

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