某同学在用多用表测定一个阻值约为十几欧姆的小电珠的电阻时他的操作步骤如下 A．将选择开关扳到欧姆档×1k量程 B．将红�表笔分别插入相应 Sketch Coloring Page

某同学在用多用表测定一个阻值约为十几欧姆的小电珠的电阻时他的操作步骤如下 A．将选择开关扳到欧姆档×1k量程 B．将红�表笔分别插入相应 Template

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tomski某同学在用多用表测定一个阻值约为十几欧姆的小电珠的电阻时他的操作步骤如下 a．将选择开关扳到欧姆档×1k量程 b．将红�表笔分别插入相应 coloring

题目某同学要测量额定电压为3V的某圆柱体电阻R的电阻率1用游标卡尺测量其长度如图所示则其长度L= Mm2为精确测量R的阻值 sketch template

2．某同学测量一只未知阻值的电阻． 1他先用多用电表进行测量按照正确的步骤操作后测量的结果如图2 53甲所示．请你读出其阻值大小为 sketch template

某同学利用如图2所示的电路测定电阻Rx的阻值所用�动变阻器上标有“20Ω 2A 字样电源电压不变．该同学实验步骤正确闭合开关S观察到 sketch template

2．某同学测量一只未知阻值的电阻． 1他先用多用电表进行测量按照正确的步骤操作后测量的结果如图2 53甲所示．请你读出其阻值大小为 sketch template

某同学在用电源电压表电流表�动变阻器开关和若干导线测定电阻RX值．所有元件均完好电源电压为60V且不变�动变阻器标有 sketch template

2．某同学测量一只未知阻值的电阻． 1他先用多用电表进行测量按照正确的步骤操作后测量的结果如图2 53甲所示．请你读出其阻值大小为 sketch template

21． 1如图甲所示为多用电表的示意图现用它测量一个阻值约为200Ω的待测电阻具体测量步骤如下 � 调节使电表指针停在表盘左侧的 sketch template

题目1在实验室某同学用多用电表粗测一段样品的电阻经正确操作后用“×100Ω 档时�现指针偏转情况如图所示则他应该换用 档填 sketch template

高中物理：多用电表的结构和使用知乎 sketch template

题目某同学要测定一个圆柱体的电阻率进行了如下操作1用准确到01mm的游标卡尺测量圆柱体的长度用螺旋测微器测量其直径如下图所示 sketch template

某同学利用如图1所示的电路测定电阻Rx的阻值所用�动变阻器上标有“20Ω 2A 字样电源电压不变．该同学实验步骤正确闭合开关S观察到 sketch template

某同学用多用电表对电阻大小进行粗测选用欧姆档的“×10 档位按正确的操作步骤测此圆柱体的电阻表盘的示数如图则该电阻的阻值约为100Ω sketch template

15．某同学在做多用电表测电阻的实验中 1测量某电阻时用“×10W 档时�现指针偏转角度过大他应该换用 档换档后在测量前先要 sketch template

1某班同学在做“练习使用多用电表 的实验 �某同学用多用电表的欧姆挡测量电阻的阻值当选择开关置于欧姆挡“×100 的位置时多用电表 sketch template

某同学在用多用表测定一个阻值约为十几欧姆的小电珠的电阻时他的操作步骤如下 A．将选择开关扳到欧姆档×1K量程 B．将红�表笔分别插入相应 sketch template

某同学在实验室准备用以下器材测一个电源的电动势E和内阻r要求测量尽量准确能测量多组数据且�动变阻器调节方便．A．电流表G量程500μA sketch template

某同学在用电压表和电流表“测定小灯泡实际功率 的实验中当他闭合开关移动变阻器�片过程中�现灯泡变亮时电压表示数反而减小小灯泡变暗时 sketch template

百度教育 sketch template

在“用多用表测电阻 的实验中下列说法正确的是 A．测量阻值不同的电阻时都必须重新调零 B．欧姆档指针恰好指示在20Ω与30Ω的正中央所测 sketch template

在做“用电流表和电压表测电池的电动势E和内电阻r 的实验时部分器材参数如下电压表电流表定值电阻R0�动变阻器R．1小红按如图甲所 sketch template

某同学先用欧姆表的“×10 档粗测一电阻阻值欧姆表示数如图1所示现欲用伏安法较准确地测定其阻值给出下列仪器供选用A．9V电池 B．电流 sketch template

题目指针式多用电表是实验室中常用的测量仪器1图甲为某同学设计的多用电表的原理示意图虚线框中S为一个单刀多掷开关通过操作开关接线 sketch template

在用伏安法测定值电阻R1阻值的实验中某同学误接成了如图所示的电路测得的有关电流表和电压表的数据如下表所示并根据表格中的数据绘制如图乙所示 sketch template

�某同学用多用电表的欧姆档来测量一电阻阻值先将选择开关旋至倍率“×10 档红�表笔短接调零后进行测量结果�现欧姆表指针如图所示则此 sketch template

某同学利用多用电表测量一个未知电阻的阻值由于第一次选择的欧姆档不够合适现改换另一欧姆档测量．两次测量时多用电表指针所指位置如图所示下面 sketch template

某同学用多用电表欧姆档测量某一�属丝电阻阻值将选择开关旋到×100档欧姆表的示数如图则�属丝电阻的阻值约为 Ω如果想测量的更精确些应 sketch template

21．如图是多用电表的示意图现用它测量一个约为20 30W定值电阻的阻值具体测量步骤如下 A．将多用电表的 旋转到电阻“ 选填“´1 sketch template

1 用已调零且选择旋钮指�欧姆档“×10 位置的多用表测某电阻阻值根据题22图1所示的表盘被测电阻阻值为 Ω若将该表选择旋钮置于 sketch template

在“练习使用多用电表 的实验中 1用多用电表欧姆档测量电阻时红�表笔互换了插孔这样影响测量结果 2如图所示是一个多用电表欧姆 sketch template

一轮复习：伏安法测电阻 知乎 sketch template

题目某同学在实验室做“测定电源电动势和内阻 的实验时�现实验桌上还有一个定值电阻R0．于是设计了如图甲所示的电路来测量电源电动势E内阻 sketch template

如下图所示某同学用多用电表欧姆档测量一个电阻阻值的示数和档位情况则这个电阻的阻值约为 Ω．为了测量得更精确些该同学进行了第二次测量请 sketch template

21．如图是多用电表的示意图现用它测量一个约为20 30W定值电阻的阻值具体测量步骤如下 A．将多用电表的 旋转到电阻“ 选填“´1 sketch template

欧姆表读数欧姆表读数多用电表读数第11页大山谷图库 sketch template

某同学做“用电流表和电压表测定电池的电动势和内电阻 实验根据实验数据得到如图12所示的U I图线由图可知该电源电动势为 V该电源的 sketch template

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