7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3v和06a 1根据 Sketch Coloring Page

7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3v和06a 1根据 Template

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tomski7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3v和06a 1根据 coloring

7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3V和06A 1根据 sketch template

4．如图1所示在开关和小灯泡之间连着两个�属夹A和B在�属夹之间分别接入硬币铅笔芯橡皮和�料尺闭合开关后小灯泡能�光的是 A sketch template

题目如图甲所示是为测出额定电压为25V的小灯泡的额定功率的实验电路图1按图连接好电路开关S闭合之前�动变阻器的�片P应置于端 sketch template

题目如右图所示家庭电路中当开关S闭合后灯泡L不亮用试电笔测试cd两点时氖管都�光测试ab两点时只有a点氖管�光则故障可能 sketch template

3．在图1所示的电路中当开关闭合后在�属夹AB之间分别接入硬币铅笔芯橡皮和�料尺小灯泡都能�光的是 A．接入硬币和�料尺 sketch template

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

如图7 所示电源电压恒定小灯泡L标有“3V 06W 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

在图4所示的电路中电源两端的电压为6V并保持不变R1R2为两个相同阻值的电阻开关S1闭合后下列说法中正确的是 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

小明用如图1所示的电路图测小灯泡电阻．已知电源电压3V待测小灯泡额定电压为25V猜想电压表示数电流表示数灯泡断路灯泡短路1当开关 sketch template

如图4所示闭合开关电灯不亮用试电笔接触D点时氖管�光接触E点时不�光说明DE间若试电笔接触A至F各点都�光说明 图 4 sketch template

题目如图所示电源电压不变开关S闭合后电压表V1的示数为4V电压表V2的示数为6V电流表A的示数为1A若将R2与R3互换位置后 sketch template

小明同学连接了如图所示的实验电路．实验时他注意比较了电路在开关闭合前后的现象．下列符合观察事实的是A开关闭合前后灯泡均能�光B开关闭合 sketch template

如图7所示当开关闭合后�现小灯泡不亮电流表无示数用电压表测量�现Uab=0Ubc=6VUdc=0若电路中只有一处故障则其故障 sketch template

题目如图所示电源电压可调小灯泡上标有“6V05A 的字样小灯泡正常�光时电压为6V电流为05A不考�温度对小灯泡电阻的影响 sketch template

如图11所示闭合开关后标出电路中电流方�——青夏教育精英家教�—— sketch template

如图4所示当开关S闭合时灯L1L2均不亮某同学用一根导线探究其故障当把导线并接在灯L1两端时�现灯L2亮灯L1不亮当把导线并接在 sketch template

当闭合开关试触时�现电流表指针的偏转如图a所示为了提高准确度接下来的操作是断开开关将电流表的量程改用．正确测出电路中的电流如图 sketch template

如图1a的电路中电源由4节新干电磁串联而成开关闭合后电压表V2的示数如图b 所示则灯两端电压分别是 和 ——青夏教育精英家教�—— sketch template

中考物理知识点：测量小灯泡的电阻欧姆定律中考� sketch template

题目某同学利用如图所示的电路测量小灯泡的电阻小灯泡标有“2．5 V 的字样他记录的实验数据如下表所示其中有一次记录的电流表示数是错误 sketch template

如图所示的电路中闭合开关时�现灯泡L1L2均不亮电流表指针几乎没有偏转．某同学用一根导线去找电路故障他将开关闭合然后将导线并接在 sketch template

如图所示在“测量小灯泡电功率 的实验中电源电压恒为3V小灯泡的额定电压为25V．1小明在检查电路时�现哟一根导线连接错误．请你在 sketch template

如图所示是某同学“测定小灯泡电功率时连接的电路小灯泡额定电压为25V所用电源电压恒为3V．1连接电路时开关应断开断开闭合开关前 sketch template

如图所示的电路中123456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

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

11．如图7所示当开关S闭合后电压表V2示数为10V电压表V1示数为8V若电源电压为15V则灯气两端电压为 A 2V B sketch template

河北省中考物理难题汇编 Word文档在线阅读与下载无忧文档 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

如图所示当开关S闭合时�现只有一灯�光且电压表示数为45V产生这一现象的原因可能是 A灯L1断路 B灯L1短路 C灯L2 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

百度教育 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

如图所示电源电压保持不变闭合开关S1S2电压表示数为6V电流表示数为06A断开S2后电压表示数变为2V则R2的电阻和电源电压 sketch template

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