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

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

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

如图4所示开关S闭合后�片P由a端�b端�动时R1的阻值将 电流表的示数将 电压表的示数将填“变大 “变小或“不变 ——青夏 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1甲所示的电路闭合开关后两灯都能�光并且两块电压表的指针所指的位置如图1乙所示则L1两端的电压是 VL2两端的电压是 V 图1 sketch template

在如图甲所示的电路中当开关闭合后两个电压表的指针偏转均为图乙所示则两个灯泡两端的电压分别为 A．12V和48VB．6V和1 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

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a所示电路当闭合开关后灯泡L1和L2都�光这时两只电压表的指针偏转角度相同指针位置均为图b所示求1L1和L2两端的 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

张明同学“探究串并联电路的电流规律实验 的电路如图1所示当把电流表分别在ABC三处时测得电流如下表所示．请你帮他完成如下几项工作测量 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如图甲为测定额定电压为“25V 小灯泡电功率的实验电路电源电压恒为3V不变1请用笔画线代替导线将图甲中的实物图连接完整 sketch template

为了“测量小灯泡的电功率”，某小组同学设计了如图甲所示的电路图，已知小灯泡上标有“25V”字样。请回答下列问题： 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

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

在如图甲所示的电路中当闭合开关后两个电流表指针偏转均为图乙所示则电阻R1和R2中的电流分别为 A．12A022AB．098 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

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

题目如图甲所示电路电源电压不变小灯泡L的额定功率为0625W乙图是该小灯泡I U图像�动变阻器的最大阻值R为定值电阻R0的三倍 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

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

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

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

如图所示的电路闭合开关S1和S2后下列分析正确的是 A．小灯泡亮电铃响 B．小灯泡亮电铃不响 C．小灯泡不亮电铃响 D．小灯泡不亮 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

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

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

16．如图7所示小灯泡L标有25V 的字样闭合开关S 后灯泡L 正常�光电流表电压表的示数分别为014A 和6V 试求1 sketch template

10．某同学连接的电路如图7所示设电源电压不变当闭合开关将�动变阻器的�片�下�动时下面的说法中正确的是A．电压表示数变大电流表示数 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

如图所示三个灯泡是相同的当开关闭合时电流表A3的示数为02A则电流表A1A2的示数分别为0606A和0404 A三个灯泡 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

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