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 Coloring Page

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 Template

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tomski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 coloring

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

16．如图3所示的电路中要使灯泡L1和灯泡L2组成串联电路应将开关S1断开开关S2闭合开关S3 要使灯泡L1和灯泡L2组成并联电路 sketch template

如图所示的电路中灯泡L1L2规格相同要使L1L2同时�光下列做法可行的是 A．只闭合S2B．同时闭合S1S2C．同时闭合S1 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

如图所示的电路中两个相同的小灯泡L1与L2串联当开关闭合时一盏灯亮一盏灯不亮且电压表有示数则电路�生的故障是 A灯L1短路B 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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

如图所示要使灯泡L1和L2串联在电路中应闭合开关若要使L1和L2并联在电路中应闭合开关绝对不允许同时闭合开关因为此时电路处于 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两只相同的白炽灯L1和L2串联接在电压恒定的电路中．若L1的灯丝断了经搭丝后与L2．串联重新接在原电路中则此时L1的亮度与灯丝 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1要使灯L1L2串联则应闭合电键 2要使灯L1L2并联则应闭合电键 3如果同时闭合电键S1S3则会 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

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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

23．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的总功率是 W．——青夏教育 sketch template

如图所示电路中 1若使L1L2串联则应闭合断开 2若使L1L2并联则应闭合 3如果闭合S1S3而断开S2 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

如图所示是小华家的部分家庭电路的电路图小华在用台灯L2学习时突然台灯L2灯丝断了而屋内的照明灯L1依然正常�光小华用试电笔检测插座c sketch template

如图所示若只需灯L1�光则需用导线只连接 接线柱若只用导线连接BC接线柱则灯L1L2 联若使灯L1L2并联则接线柱A与B连接 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

如图所示的电路中将开关S闭合灯L1和灯L2均�光则下列说法中正确的是A．灯L1和灯L2串联B．灯L1和灯L2并联C．灯L1和灯L2两端的 sketch template

在如图所示的电路中所有的电灯的额定电压为U额定电流为I其中LGLR分别为绿色红色指示灯L1L2L3 为照明灯．A为电磁继电器中 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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电路中要使灯L1L2串联则应该闭合开关若要使两灯并联则应该闭合开关同时闭合开关 是不允许的．——青夏教育精英家教�—— 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要使灯泡L1和L2组成并联电路应 A．只闭合S2 B．只闭合S3C．只闭合S1和S3D．只闭合S2和S3——青夏教育精英家教�—— 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S1S3S1S3．同时闭合开关S2S3能�光的灯是L1L1．同时闭合开关 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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

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