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 Coloring Page

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 Template

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tomski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 coloring

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 05A”，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

在如图1所示的电路中电源电压为18伏保持不变电阻R1为10欧闭合电键S后电流表A的示数如图2a所示． �求电阻R1两端的电压U1 sketch template

如图所示电源电压为9V且保持不变R1=30Ω闭合开关后电压表示数为3V则1电阻R1两端的电压为多�2电流表的示数为多� sketch template

百度教育 sketch template

题目如图所示电流表量程为0 06A电压表量程为0 15V电阻R0=30Ω电路两端电压恒为U=24V当�动变阻器接入电路的电阻 sketch template

如图7 所示电源电压恒定小灯泡L标有“3V 06W 字样R为定值电阻闭合S断开S1小灯泡正常�光若再闭合S1�现电流表示数 sketch template

如图所示电源电压恒定�动变阻器的规格为“30Ω 1A 在AB间接入规格为“12V 12W 的灯泡闭合开关当变阻器的五分之一阻值连入 sketch template

题目如图所示电源电压保持不变闭合开关S将�动变阻器的�片P�左移动电压表V的示数 电压表V的示数与电流表A1的示数之比 电流表 sketch template

题目在图a所示电路中电源电压为24伏且保持不变电阻R1的阻值为20欧�动变阻器R2标有“1A 字样电压表V的表盘如图b所示 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

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

如图所示的电路中电源电压保持不变R为定值电阻当开关闭合时标有“6V 3W 的小灯泡L恰好正常�光若保持R不变将L换成另一只标有 sketch template

如图所示，甲同学在做“测量小灯泡的电功率”实验。实验器材：电源（电压恒为6V）、小灯泡（额定电压为25V，正常�光时灯丝电阻约为10Ω sketch template

题目如图所示的电路电源电压为 3 伏并保持不变定值电阻 R1 的阻值为 30 欧姆．当电键 S 闭合时电流表 A1 的示数为 04 sketch template

“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

如下图电路中1当开关S闭合后电压表的示数表示 A．L1两端的电压 B．L2两端的电压 C．电源电压 D．L1和L2两端的电压 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电路中电源电压6V恒定电流表的量程为0 06A电压表的量程为0 3V灯L1和L2的规格分别为“6V 18W 和“6V 1 sketch template

在如图所示的电路中电源电压不变．闭合电键K后灯LlL2都�光．一段时间后其中的一盏灯突然熄灭而电压表V1的示数变大电压表V2的示数 sketch template

如图所示一理想变压器与定值电阻R1理想电流表A1共同接入电压恒为U的交流电源上原线圈接入电路的匝数可以通过调节�动触头P来改变副线圈 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

如图所示电源电压不变当开关S1S2同时闭合时电流表的示数是03A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

如图所示电源电压为12V电压表示数为4VR1为5Ω求电流表的示数和R2的阻值． 08A 10Ω 解析由电路图可以知道 R1与 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 05A 电压表量程为0 3V电流表量程为0 0 sketch template

如图所示电路中电源电压恒为12V电流表A1A2的量程分别为06A3A�动变阻器R2标有“2A 50Ω 字样将�动变阻器�片P调到 sketch template

题目如图所示电源电压恒为30VR1为定值电阻�动变阻器R2的阻值变化范围为050Ω闭合开关当�片P处于某一位置时电压表示数 sketch template

如图所示电源电压恒为12VL1上标有“3V 3W 字样当闭合S1将S2拨至a处�动变阻器的�片移至中点处L1正常�光电路的总功率 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

题目如图所示电源电压保持不变小灯泡L标有“6V 36W 字样R为定值电阻闭合开关S1 断开S2 小灯泡正常�光小灯泡的 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

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

题目如图所示为小排量汽车在lh的时间内在水平路面上匀速行驶了72 Km消耗汽油6 Kg若已知该汽车�动机的功率为23 KW汽车 sketch template

如图甲所示的电路，当闭合开关后两只电压表的指针偏转均如图乙所示，则电压表V1测得的是两端电压，电源电压是V，R1与R2的电阻之比为。 sketch template

如图甲所示电源电压恒为9伏�动变阻器的最大阻值为100欧电流在01安 04安之间时电子元件均能正常工作．若通过此电子元件的电流与其 sketch template

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