对于l1l2额定电压相同电阻r1＞两个小灯泡连接到电路中谁更亮的问题两位同学产生了争议甲认为电功率与电阻成正比因为r1较大 Sketch Coloring Page

对于l1l2额定电压相同电阻r1＞两个小灯泡连接到电路中谁更亮的问题两位同学产生了争议甲认为电功率与电阻成正比因为r1较大 Template

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anonymous

anonymous
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tomski对于l1l2额定电压相同电阻r1＞两个小灯泡连接到电路中谁更亮的问题两位同学产生了争议甲认为电功率与电阻成正比因为r1较大 coloring

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

将额定电压相同的两个灯泡L1、L2串联后接入电路中，如图所示．接通电路后�现L1要亮一些（忽略灯丝电阻的变化），则两灯的额定功率是P1 百度教育 sketch template

如图所示两个额定电压相同的灯泡L1和L2串联在电路中闭合开关后�现L2不亮L1亮电压表有一定的示数其原因是 A．L2的灯丝烧断B sketch template

如图所示将两只额定电压相同的灯泡L1L2串联在电路中闭合开关S后�现L1亮L2不亮对此有下列几种猜想其中可能的是 � L2灯丝断 sketch template

如图所示将两只额定电压相同的灯泡L1L2串联在电路中闭合开关S后�现L1亮L2不亮．对此有下列几种猜想其中可能的是 �L2灯丝 sketch template

如图23所示灯泡L1L2并联在电源电压为9V电路中已知电阻R1=30ΩR2=15Ω求 1通过灯泡L1L2的电流为多大 2 sketch template

将两只额定电压相同的小灯泡L1L2串联在电路中如图所示．闭合开关后�现灯L1较亮灯L2 较暗其原因是 A．灯L1额定功率较大 sketch template

将两只额定电压相同的小灯泡L1L2串联在电路中如图所示闭合开关S后�现灯L1较亮灯L2较暗则下列说法中正确的是 A．灯L1的电阻 sketch template

小明将额定电压相同的两只小电灯L1L2串联接在电源上如图所示闭合开关后�现L1�出明亮的光却看不到L2�光造成此现象的原因可能是A sketch template

如图所示两个相同灯泡L1L2分别与电阻R和自感线圈L串联接到内阻不可忽略的电源的两端当闭合电键S到电路稳定后两灯泡均正常�光已知 sketch template

对于L1L2额定电压相同电阻R1＞两个小灯泡连接到电路中谁更亮的问题两位同学产生了争议甲认为电功率与电阻成正比因为R1较大 sketch template

将两只额定电压相同的小灯泡L1L2串联在如图所示的电路中闭合开关后�现灯L1较亮灯L2较暗对此有下列几种猜想其中可能的是 �灯 sketch template

如图所示将两只额定电压相同的灯泡L1L2串联在电路中闭合开关S后�现灯泡L1较亮灯泡L2较暗此现象说明 A灯泡L1的阻值 sketch template

如图所示额定电压相同的灯泡L1L2串联在电路中闭合开关后�现灯L1亮L2不亮．其原因可能是 AL2的灯丝烧断BL2的额定 sketch template

干货 电路中为何需要串联小电阻？这样解释就懂了 知乎 sketch template

如图所示的电路中L1L2是两盏完全相同的灯泡闭合开关S后L1L2均正常�光过了一会儿突然两灯同时熄灭检查时�现若用一根导线先后 sketch template

如图所示L1L2的是阻值不同规格合适的灯泡同学们探究“电功率跟电流电压关系 的实验电路．要探究“电功率跟电压的关系你选择甲电路 sketch template

如图所示灯泡规格均相同甲图中电压恒为6V乙图中电压恒为12V．分别调节R1R2使灯均正常�光那么此时电路消耗的总功率之比P1P2 sketch template

如图所示的中的小灯泡都相同甲图中电压恒定为6 V乙图中电压恒定为12 V调节可变电阻R1R2使四只小灯泡都恰好正常�光这时 sketch template

如下左图所示是标有“25V 字样的小灯泡L的电阻随它两端电压变化的图象将小灯泡L和电阻R接入右图所示的电路中电源电压为6V当开关S断开 sketch template

如图所示将两只额定电压相同的灯泡L1L2串联在电路中闭合开关S后�现灯泡L1较亮灯泡L2较暗此现象说明 A．灯泡L1的阻值大于 sketch template

将额定电压相同的两个灯泡L1L2串联后接入电路中如图2所示接通电路后�现灯泡L1要比L2亮一些则下列判断正确的是A．L1的电阻比L2的 sketch template

串联电路、并联电路电流、电压、电阻之间的关系知乎 sketch template

在图甲乙所示的电路中电源两端的电压相同且不变L1和L2两盏灯的额定电压相同但灯L1的额定功率比灯L2的额定功率小些如果要使两灯的实际 sketch template

电阻R1与R2串联在电路中已知R1两端的电压为15VR2两端电压为45VR1 R2=600Ω．R1R2各为多�欧题目和参考答案 sketch template

小亮通过实验分别测出了两个电阻R1R2中电流与其两端电压的一组数据并画出了U I图象如图所示．将R1R2串联后接入电路当通过R1的电流 sketch template

在如图所示的电路中，电源电压保持不变，定值电阻R1的阻值为10Ω，�动变阻器R2上标有“2A”字样。闭合开关S，移动�片P至电路中的电流最大 sketch template

将两只额定电压相同的小灯泡L1L2串联在如图所示的电路中闭合开关后�现灯L1较亮灯L2较暗其原因可能是 A．灯L1额定功率较大 sketch template

小明同学连接了如图电路V1V2是两个完全相同的电压表都有3V和15V两个量程．当闭合开关S后两表指针偏转角度相同则灯L1和L2的电阻 sketch template

如图是研究串联电路电压关系时用电压表测电阻两端的电压的实物图V1和V2分别测R1和R2两端的电压1指出图中的错误2画出改正后的电路图 sketch template

如图所示电路中每个电阻的阻值都相同额定功率也相同当电压U升高时先烧坏的电阻应是 AR1和R2 BR3 CR4 D 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R1R2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

两个电阻R1和R2串联已知R1R2=23则通过两电阻的电流之比I1I2=11两电阻两端的电压之比U1U2=23通过两电阻的 sketch template

20．把R1=6Ω和R2=9Ω的两个电阻并联接在电源电压为3V的电路两端时通过R1R2的电流之比为32在相同时间内R1R2产生热量之 sketch template

如图所示电路中电源电压不变R1为定值电阻R2为�动变阻器两个电压表V1V2分别接入电路不同位置．闭合开关S�右移动�片P�现电压 sketch template

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