如图所示的电表的下列说法中不正确的是 A．它是一个电压表b．它的示数一定是17vc．它的示数可能是85vd．它有一个负接线柱和两个正 Sketch Coloring Page

如图所示的电表的下列说法中不正确的是 A．它是一个电压表b．它的示数一定是17vc．它的示数可能是85vd．它有一个负接线柱和两个正 Template

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tomski如图所示的电表的下列说法中不正确的是 a．它是一个电压表b．它的示数一定是17vc．它的示数可能是85vd．它有一个负接线柱和两个正 coloring

如图所示电流表的示数为12A12A电压表的示数为22V22V．对人体安全的电压是不高于36不高于36V．——青夏教育精英家教�—— sketch template

如图所示电源电压保持不变闭合开关后将�动变阻器R2的�片P�右移动的过程中下列说法正确的是 A．电流表A的示数变小电压表V2的示 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

题目如图所示的电路中电源电压保持不变闭合开关S将�动变阻器的�片P�左移动下列说法中正确的是A电压表的示数不变电流表A1的示数 sketch template

如图所示的电路中除了有一根导线是断的其余的器材完好无损电源是由两节新蓄电池组成．为了查出这根导线小刚同学采取了下列方法将电表的正 sketch template

百度教育 sketch template

如图所示的电路中R1R2均为定值电阻．电源电压不变．闭合开关S1S2两电表均有示数．如果只断开开关S1则电压表的示数不变如果只断开 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

如图所示是简化的多用电表的电路．转换开关S与不同接点连接就组成不同的电表已知R3 sketch template

题目如图所示的电路中电源电压保持不变闭合开关S将�动变阻器的�片P�左移动下列说法中正确的是A电压表的示数不变电流表A1的示数 sketch template

如图所示某同学用伏安法测未知电阻Rx时分别采用电流表内接法和外接法．由于实验中的采用的电表不是理想电表导致测量误差下列说法正确的是 sketch template

如图所示电路中电源的内电阻为rR1R3R4均为定值电阻电表均为理想电表．闭合电键S当�动变阻器R2的�动触头P�右�动时电表的示 sketch template

如图所示的电表的下列说法中不正确的是 A．它是一个电压表B．它的示数一定是17VC．它的示数可能是85VD．它有一个负接线柱和两个正 sketch template

如图所示的电路中电源电压保持不变．当�动变阻器的�片P�右�动时电流表和电压表的示数变化情况是 A．电流表和电压表的示数都变大 sketch template

如图所示的电路中电源电压保持不变当开关闭合�片由b端�a端移动的过程中以下说法正确的是 A．电压表的示数减小电流表的示数增大B sketch template

某同学用多用电表按如图所示电路进行了正确的测量闭合开关S后多用电表直接测出的是 A．灯泡L的电功率 B．灯泡L的电阻 C．通过灯泡L的电流 sketch template

如图所示一理想变压器�负载供电变压器输入电压不变若电键S闭合则图中所有交流电表的示数及变压器输入电功率的变化情况为 电压表和电流 sketch template

如图所示在电磁继电器的低压控制电路上安装一个温度热敏元件当温度降低时低压控制电路断开当温度升高时低压控制电路接通在工作电路安装一个 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甲所示的电路中电源电压恒定不变R2=30Ω通过R1的电流随它两端电压变化关系如图乙所示则下列计算正确的是A．R1的阻值大小是 sketch template

如图所示电路电源两端电压为45V且保持不变．电阻R1为10Ω�动变阻器R2的铭牌上标有“20Ω 1A 的字样电流表的量程为0 06A 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电源电压不变P置于中点a为电流表或电压表．任意闭合开关电路都是安全的下列说法正确的是 A．a是电压表B．只闭合S1P sketch template

题目在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�左移动下列说法中正确的是A 电流表A2的示数不变电压表V 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

题目如图所示的电路中电源电压保持不变R1为�动变阻器R2为定值电阻闭合开关 S 后�片从最左端�右移动到中点的过程中下列说法 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

题目如图所示的电路中电源电压为 6V且保持不变�动变阻器 R 的规格为“40Ω 1A 定值电阻 R1的规格为“10Ω 05A 只 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

如图所示的电表的下列说法中不正确的是 A．它是一个电压表B．它的示数一定是17VC．它的示数可能是85VD．它有一个负接线柱和两个正 sketch template

如图甲所示的变压器电路中理想变压器原副线圈匝数之比为12ab输入端输入如图乙所示的交变电流副线圈电路中电阻R=1Ω电路中的电流表 sketch template

如图所示的电路中电源两端的电压保持不变闭合开关SS1当�片P 移至�动变阻器R2的A端时电压表V1的示数为U1电压表V2的示数为 sketch template

如图所示的电路中电源两端电压为6V并保持不变．定值电阻R1的阻值为100Ω�动变阻器R2的最大阻值为50Ω．当开关S闭合时�动变阻器的� sketch template

如图所示的电路电源两端电压保持不变当开关 S 闭合�动变阻器的�片 P 由b 端移到a 端的过程中下列说法中正确的是 A．电压表的 sketch template

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