38．在测定额定电压为电阻约为的小灯泡的额定功率的实验中某同学将器材连成如图所示的电路 �请指出该电路连接中错误或不妥 Sketch Coloring Page

38．在测定额定电压为电阻约为的小灯泡的额定功率的实验中某同学将器材连成如图所示的电路 �请指出该电路连接中错误或不妥 Template

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tomski38．在测定额定电压为电阻约为的小灯泡的额定功率的实验中某同学将器材连成如图所示的电路 �请指出该电路连接中错误或不妥 coloring

38．在测定额定电压为电阻约为的小灯泡的额定功率的实验中某同学将器材连成如图所示的电路 �请指出该电路连接中错误或不妥 sketch template

用伏安法测量一只定值电阻的实验所需的器材实物如图各器材规格为�待测电阻RX�直流毫安表�直流电压表�直流电源输出电压3V内阻可不计� sketch template

在“伏安法测电阻 实验中小灯泡额定电压为3．8V电源电压为6V1小敏连接了如图所示的部分实物电路请你用笔画线代替导线将电路连接 sketch template

图甲是小灯泡L和定值电阻R的电流与电压的关系，则R的电阻为Ω，现将它们并联后接在电压为2V的电源两端，如图乙，则干路中的电流是A；若将它们串联 sketch template

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定值电阻的作用知乎 sketch template

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某同学测定额定电压为38V小灯泡的额定功率灯泡的电阻约为15Ω他所连接的电路如图甲所示．1请指出该电路中的两个错误或不当之处．� sketch template

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一轮复习：伏安法测电阻 知乎 sketch template

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为了测定额定电压为“25V 小灯泡的电功率小明同学设计了如图甲所示的电路图．实验中各元件完好电源电压保持不变．1连接电路的过程中开关 sketch template

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测定额定电压为38V的小灯泡的额定功率1所需器材 ．2画出实验所用电路图．3实验原理为 ．4连接电路时�动变阻器�片放在 sketch template

为了测定额定电压为25 V的小灯泡的额定功率可用如图所示的电路图． 1 甲乙两表中甲表是乙表是． 2 连接电路时开关应 sketch template

某同学做测定额定电压为38伏的灯泡的电功率的实验接线时误将电流表和电压表的位置接错如图所示合上开关S电压表示数为45伏电流表示数 sketch template

楠楠同学在资料上看到了一份材料某大学物理系的同学再测定额定电压为25V小灯泡的电阻的实验中得到部分U和I的数据如下表所示实验次数 sketch template

在测定�属丝的电阻率的实验中�用螺旋测微器测量�属丝的直径其示数如图a所示则该�属丝的直径为d=1880mm．�某同学采用伏安法 sketch template

如图是测定额定电压为38V小灯泡额定功率的实物连接图．1在图中把电压表连接好使它成为一个完整的实验电路．2实验时�现电压表示数为 sketch template

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

测定额定电压为38V的小灯泡的额定功率1所需器材 ．2画出实验所用电路图．3实验原理为 ．4连接电路时�动变阻器�片放在 sketch template

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

实验小组进行了“测定额定电压是25V的小灯泡功率 的实验 1实验记录与计算如下表 电压U/V 15 20 25 电流I/——青 sketch template

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