如图所示有两只灯泡�动变阻器开关干电池两节电流表一个要用�动变阻器控制l1的电流且�片p�右移动时电流表示数增大l2的亮度不变 Sketch Coloring Page

如图所示有两只灯泡�动变阻器开关干电池两节电流表一个要用�动变阻器控制l1的电流且�片p�右移动时电流表示数增大l2的亮度不变 Template

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sketch #214 bugs bunny

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tomski如图所示有两只灯泡�动变阻器开关干电池两节电流表一个要用�动变阻器控制l1的电流且�片p�右移动时电流表示数增大l2的亮度不变 coloring

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

如图所示有两只灯泡�动变阻器开关干电池两节电流表一个要用�动变阻器控制L1的电流且�片P�右移动时电流表示数增大L2的亮度不变 sketch template

如图所示的两个电路当�动变阻器�片�右移动时灯泡L1 L2亮度变化情况是 A．L1变亮L2变暗B．L1L2都变亮C．L1变暗L2不 sketch template

如图所示现有两只灯泡电源电流表开关及�动变阻器各一个．某小组要设计符合如下要求的电路灯L1L2要并联电流表测通过灯L2的 电流 sketch template

如图所示小灯泡标有“6V 36W 字样�动变阻器变化范围0 12Ω电源电压和小灯泡电阻不变S1始终闭合．求1小灯泡电阻RL是 sketch template

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

如图所示灯泡L1与�动变阻器串联灯泡L2与它们并联闭合开关后将�片�右移动时两只灯泡的亮度变化情况是 AL1变亮L2不变亮B sketch template

如图所示将两只额定电压相同的灯泡L1L2串联在电路中闭合开关S后�现灯泡L1较亮灯泡L2较暗此现象说明 A灯泡L1的阻值 sketch template

一轮复习：纯电阻电路动态分析串反并同法知乎 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是小华和小红做“测定小灯泡功率实验电路图．其中小灯泡的额定电压为25V灯丝电阻约10Ω左右电源为两节新的干电池�动变阻器上标 sketch template

如图所示将两只额定电压相同的灯泡L1L2串联在电路中闭合开关S后�现L1亮L2不亮对此有下列几种猜想其中可能的是 � L2灯丝断 sketch template

如图所示电路闭合开关两只灯泡都不亮且电流表和电压表的指针都不动．现将两灯泡L1和L2的位置对调再次闭合开关时�现两只灯泡仍不亮电流 sketch template

按如图所示的实物图当开关闭合时正确的是 A．两只灯泡是串联的 B．灯泡L2是被短路的C．灯泡L1是被短路的D．两只灯泡是并联的 题目和参考 sketch template

13．如图4所示电源电压和灯泡电阻都保持不变当�动变阻器的�片P由中点�右移动时下列判断不正确的是 A．电流表和电压表的示数都增大 B sketch template

如图1所示的电路中电源电压不变小灯泡的额定电压为25V图2是该小灯泡I U图象变阻器的最大阻值R为30Ω．闭合开关S当�片P置于某 sketch template

如图所示当�动变阻器�动触头�左移动时灯泡ABC的亮度将 A都变亮 B都变暗 CAB变亮C变暗 DAC变亮B变暗 sketch template

一轮复习：�动变阻器的选择知乎 sketch template

如图所示电源电压恒定不变电阻R1的阻值为5Ω小灯泡上标有“12V 6W 字样闭合开关S．1当开关S1S2都闭合�动变阻器的�片 sketch template

如图所示L1和L2是两只相同的小灯泡ab是电流表或电压表闭合开关S后若两灯都能�光则a表是 表b表是 表——青夏教育精英家教�—— sketch template

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

如图所示当闭合开关移动�动变阻器的�片P在图示位置时小灯泡正常�光电流表电压表有示数．若突然�现电压表的示数变大了则�生的情况是 sketch template

如图所示电源电压恒定小灯泡标有“3V 15W 字样�动变阻器电阻R1的阻值为0 27Ω定值电阻R2的阻值为27Ω．当干路开关S闭合 sketch template

如图所示的电路中灯泡L1L2上分别标有“6V 3W “6V 9W 的字样两灯泡的电阻电源电压均保持不变．当开关S1闭合S2拔至a时 sketch template

如图所示的电路中123456为连接点的标号．在开关闭合后�现小灯泡不亮．现用多用电表检查电路故障需要检测的有电源开关小 sketch template

如图所示的电路中有几根导线尚未连接请用笔画线代替导线补上补上后要求1两灯泡并联开关控制整个电路2电流表测灯L2的电流．3 sketch template

如图所示当开关S闭合后两只灯泡均�光两表均有示数过一段时间后�现电压表示数变为0电流表示数增大经检查除小灯泡外其余器材的连接良好 sketch template

如图所示当�动变阻器R2的�片�到a端时开关S闭合这时电流表示数为075A标有“6V3W 的小灯泡正常�光开关S断开变阻器划片 sketch template

如图所示有两节干电池两个小灯泡L1L2电键和电流表电压表要求把小灯泡串联在电源上并用电压表测量L1两端电压用电流表测量电路的总 sketch template

如图所示电路两只灯泡L1和L2上分别标有“8V 4W 和“4V 1W 将它们与�动变阻器串联后加在8V的电源上闭合开关S当�动变阻器的 sketch template

如图甲所示电路，电源电压恒为6V，�动变阻器R的规格为“25Ω、1A”，电流表量程选择“0∼06A”，电压表量程选择“0∼3V”，小灯泡上标 sketch template

如图所示电路电源两端电压保持12V不变小灯泡L上标有“6V3W 字样�动变阻器最大电阻值R=60Ω．不考�灯丝电阻随温度的变化则下列 sketch template

如图所示将两只额定电压相同的灯泡L1L2串联在电路中闭合开关S后�现L1亮L2不亮对此有下列几种猜想其中可能的是 � L2灯丝断 sketch template

小红做实验时他按如图所示的电路图连接好电路闭合开关后�现两灯均不亮故障原因是两只灯泡中只有一只是坏的．现给你一根导线一个电压表一只 sketch template

如图所示小亮做实验时把甲乙两只灯泡并联后接在电源上．闭合开关后�现甲灯不�光乙灯�光．经检查电路连接正确两只灯泡都完好无损．则甲 sketch template

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