6．某同学将如图2所示的三个灯泡连接在电路里接线良好当闭合开关时三个灯泡都不亮则 A．甲灯泡丝断了 B．乙灯泡丝断了 C．丙灯泡丝断了 Sketch Coloring Page

6．某同学将如图2所示的三个灯泡连接在电路里接线良好当闭合开关时三个灯泡都不亮则 A．甲灯泡丝断了 B．乙灯泡丝断了 C．丙灯泡丝断了 Template

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tomski6．某同学将如图2所示的三个灯泡连接在电路里接线良好当闭合开关时三个灯泡都不亮则 a．甲灯泡丝断了 b．乙灯泡丝断了 coloring

6．某同学将如图2所示的三个灯泡连接在电路里接线良好当闭合开关时三个灯泡都不亮则 A．甲灯泡丝断了 B．乙灯泡丝断了 C．丙灯泡丝断了 sketch template

如图所示将某灯泡分别接在由相同电池组成的甲乙两个电路中下列说法错误的是 A．图甲灯泡两端电压比图乙小B．图甲灯泡中的电流比图乙小C．图 sketch template

在“用电流表测电流 的实验中某同学接成如图5a所示的电路当开关闭合后两灯都�光两个电流表的指针所指位置均为图5b所示则通过灯 sketch template

某同学采用如图甲所示的电路测定电源电动势和内电阻已知干电池的电动势约为15V内阻约为2Ω电压表V电流表A�动变阻器有R1和R2各一 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

如图所示电路如果同时闭合开关S1S3且断开S2则灯L1L2为联要使灯L1L2组成串联电路只要闭合开关 ．——青夏教育精英家教�—— sketch template

1某同学用打点计时器测量做匀速直线运动的物体的加速度电源�率f= 50 Hz在纸带上打出的点中选出零点每隔4个点取1个技术点因 sketch template

某同学在“测量小灯泡电阻 的实验中设计了如图22甲所示的电路图小灯泡上标有“38V15W 字样请完成和解答下列问题 1在图22 sketch template

某同学将如图所示的三个灯泡连接在电路里接线良好当闭合开关时三个灯泡都不亮则 A．甲灯泡丝断了B．乙灯泡丝断了C．丙灯泡丝断了D．都 sketch template

根据如图甲所示的电路图将图乙中的各元件连接起来若开关S闭合后通过电流表的电流为0 8A通过灯L1的电流为0 5A则电流表的示数应是 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

某同学在木板上安装如图所示的三只灯泡已知灯泡L1和L3的电阻分别为R1=10欧R3=25欧．连好电路后要测电源电压时�现连接电压表的导线 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

图是某同学设计的在导体两端电压U=10V不变的条件下探究通过导体的电流I跟导体的电阻R关系的实验电路图根据实验测量的数据他在坐标系中画出 sketch template

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

通路、断路和短路 sketch template

某校兴趣小组同学想探究“一段电路中的电流跟电阻的关系设计了如下图甲所示的电路图1根据该兴趣小组设计的图甲电路图把图乙的实物图连接完整 sketch template

某同学在按图6所示图a的电路测通过灯泡L的电流的实验中闭合开关S时� 现电流表指针偏转到如图b所示的位置于是 图6 ——青夏 sketch template

某同学通过实验研究小灯泡的电流与电压的关系可用的器材如下电源电动势为3 V内阻为1 Ω电键�动变阻器电压表电流表小灯泡 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“25V”字样。请回答下列问题： sketch template

在“测定小灯泡的功率 的实验中小明同学设计的电路如图1所示他选用的小灯泡的额定电压为25V电阻约为8Ω电源为两节干电池．1请用 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

百度教育 sketch template

4．某同学连接的电路如图2 2所示他所用的电源是四节干电池串联组成的电池组当他将开关闭合后电压表的示数为2 V则L1两端的电压为 sketch template

人教版八年级物理上册第五章《电流和电路》单元测试题 Word文档在线阅读与下载无忧文档 sketch template

在如图所示的四个电路中当闭合开关S后小灯泡L1L2都能正常�光其中电压表可直接测出L1两端电压的电路图是 A．B．C．D．题目和 sketch template

某同学在探究通过导体的电流与其两端电压的关系时根据记录的实验数据画出了如图所示的图象．根据图象下列说法中错误的是A将甲乙两导体串联后 sketch template

某同学连接的电路如图所示闭合开关后�现电流表甲的示数为02A电流表乙的示数为08A下面的说法中正确的是 A．电阻R1与电阻R2 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中123456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是某同学检查视力时的情景下列说法正确的是 A．镜中视力表的像是实像 B．镜中视力表的像比视力表小 C．镜中视力表的像到该 sketch template

某同学连接的电路如图所示闭合开关后无论怎样调节�动变阻器灯泡L1L2都不亮．他用电压表进行电路故障检测把电压表并联接在某两点之间 sketch template

在图所示电路中电源电压相等且保持不变三个电流表中有两个电流表的示数相等下列说法正确的是A．若电流表A1A3的示数相等则R1＝R3 sketch template

某同学连接的电路如图所示灯泡上标有“35V 07W 的字样该同学所用电源是由三节干电池串联组成的．闭合开关调节�动变阻器的�片当 sketch template

某同学连接的电路如图7 8所示已知他所用的电源电压为20 V电阻R为2 KΩ�动变阻器的最大电阻为3 KΩ当他将�片P从b��a的过程 sketch template

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