如图所示要使灯l1和l2串联则关于1234四个接线柱的连接正确的是 A．只需连接1和2b．只需连接2和3c．只需连接3和4d Sketch Coloring Page

如图所示要使灯l1和l2串联则关于1234四个接线柱的连接正确的是 A．只需连接1和2b．只需连接2和3c．只需连接3和4d Template

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tomski如图所示要使灯l1和l2串联则关于1234四个接线柱的连接正确的是 a．只需连接1和2b．只需连接2和3c．只需连接3和4d coloring

如图所示的电路图中要使灯泡L1和L2组成串联电路应该只闭合开关若要使灯泡L1和L2组成并联电路应该闭合开关题目和参考答案——青 sketch template

如图将灯L1“6V 3W 和L2“6V 6W 串联现要使其中一盏灯长时间正常�光则电源电压是 V电路消耗的总功率是 W 题目和参考答案 sketch template

如图所示电路中要测通过灯L1的电流应选乙图要测通过灯L2的电流应选丁图要测通过灯L1和L2的电流之和应选甲图闭合开关会烧坏电流 sketch template

如图所示在电路中要使电灯L1和L2串联应闭合开关．在电路中要使电灯L1和L2并联应闭合开关．为了防止电路出现短路不能同时闭合开关 sketch template

如图所示要使灯L1和L2串联则关于1234四个接线柱的连接正确的是 A．只需连接1和2B．只需连接2和3C．只需连接3和4D sketch template

如图所示如果要使灯L1L2串联则应闭合开关S1断开开关S2S3如果电流表示数为025A则通过L1的电流为025A．题目和 sketch template

如图所示电路灯L1标有“24V 16W 灯L2标有“12V ．两灯串联后接在电压为U的电路中为使它们都不被烧坏下列说法正确的是 sketch template

如图所示的电路中小灯泡L1和L2都标有“3V 025A 字样电源由2节15V的干电池串联而成则下列说法中正确的是 A．S闭合后 sketch template

如图所示电路要使灯泡L1和L2组成串联电路应该 A．只闭合S3B．只闭合S2C．同时闭合S1和S2D．同时闭合S1和S3——青夏教育 sketch template

1如图甲所示电路中要使灯L1和L2连接成并联电路应闭合S2S3同时断开开关S1要使两灯连接成串联电路应闭合开关S1同时断开开关 sketch template

如图所示要使灯L1和L2串联应闭合开关S2S2要使灯L1和L2并联应闭合开关S1S3S1S3绝对不允许同时闭合开关S1S2S1 sketch template

如图所示的电路中若要使灯L1L2串联则应只闭合开关S2要使灯L1L2并联则应只闭合开关S1S3不允许同时闭合开关S1S2 sketch template

如图所示把两个小灯泡串联后接到电源上闭合开关�现灯泡L1比灯泡L2亮一些．对这一现象分析错误的是 A．L1功率比L2功率大B．L1 sketch template

如图所示的电路中若要使灯L1和L2组成并联电路应闭合开关应断开开关 A．S2S3S1B．S1S3S2C．S1S2S3——青 sketch template

如图所示的电路中要使灯L1L2并联�光则应闭合开关 A．S1 B．S1S3 C．S2S3 D．S1S2S3——青夏教育精英家教�—— sketch template

如图所示的电路中当S1S2都闭合时则 A L1L2串联 B L1L2并联 C 灯L1被短路 D 灯L2短路解析 sketch template

如图所示电路如果要使灯L1和L2并联则需要闭合开关如果要使灯L1和L2串联则需要闭合开关题目和参考答案——青夏教育精英家教�—— sketch template

如图所示的电路中若只需要灯L1亮则需要闭合开关 要使灯LlL2串联则应只闭合开关 要使灯L1L2并联则应闭合开关．——青夏 sketch template

如图所示现有两只灯泡电源电流表开关及�动变阻器各一个．某小组要设计符合如下要求的电路灯L1L2要并联电流表测通过灯L2的 电流 sketch template

如图所示要使灯L1L2组成串联电路则应闭合开关绝对不能同时闭合开关．题目和参考答案——青夏教育精英家教�—— sketch template

在如图的电路中要使灯L1L2串联需要闭合的开关是S1S1要使L1L2并联需要闭合的开关是S2和S3S2和S3此电路绝对不能把S1和 sketch template

如图所示电路中甲乙丙分别为电流表或电压表要使电路中的灯L1和L2串联则乙为表丙为电压表要使电路中的灯L1和L2并联则甲为表 sketch template

如图所示灯L1与灯L2串联已知灯L1的电阻值为R1=5Ω灯L2两端电压为U2=2V．若补充一个已知量R2=10ΩR2=10Ω则可以 sketch template

如图所示灯L1L2上分别标有“6V 3W “5V 5W 的字样当开关S闭合时一灯正常�光一灯偏暗则A1A2两电流表的示数之比是 sketch template

如图要使L1L2串联应闭合开关 要使L1L2并联应闭合开关若同时闭合开关 则会出现电源短路现象这是绝不允许的 答案——青 sketch template

如图所示如果要使灯L1与L2并联则应该闭合开关断开开关同时闭开关 是不允许的．——青夏教育精英家教�—— sketch template

如图所示电路中要使L1L2串联则应闭合的开关是S3要使灯L1L2并联则应只闭合开关S1与S2．题目和参考答案——青夏教育精英家教�—— sketch template

如图所示电路当闭合开关时 灯 L1和 L2串联；当闭合开关时 灯L1和 L2并联；从安全角度考� 不能同时闭出卷� sketch template

如图所示的电路中若要L1L2串联则需闭合开关S2判断开关S1S3若要使L1和L2并联则需闭合S1S3．断开S2若同时闭合S1 sketch template

34．如图所示电路要使L1与L2并联应闭合开关 要使L1与L2串联应闭合开关 ——青夏教育精英家教�—— sketch template

如图所示的电路：（1）若要使灯L1与L2并联，开关S只控制灯L1则线头M应接在点上．（2）若要使灯L1与L2并联，开关S同时控制灯 sketch template

如图所示电路中要使L1L2串联则应闭合的开关是S3要使灯L1L2并联则应只闭合开关S1与S2．题目和参考答案——青夏教育精英家教�—— sketch template

如图6所示的电路中要使灯L1L2并联�光则应闭合开关 A．S1 B．S1S3 C．S2S3 D．S1S2S3 12如图5要 sketch template

如图所示电路中要使L1L2并联必须闭合开关S1S2S1S2．题目和参考答案——青夏教育精英家教�—— sketch template

如图所示的电路中要使灯L1L2并联�光则应闭合开关AS1BS1S3CS2S3DS1S2S3——青夏教育精英家教�—— sketch template

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