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 Coloring Page

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�—— Template

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tomski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�—— coloring

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S2S3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的电路中小灯泡L1和L2连在电路里电源由两节干电池串联而成则下列说法正确的是 A．L1L2并联S是干路开关闭台开关时两 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

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

23． 如图14甲所示小灯泡L1和L2 额定电压均为6VAB分别为L1 和L2中的电流随两端电压变化关系的曲线现将两灯连入图乙所示 sketch template

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

如图所示若要使灯泡L1L2是并联的下面做法正确的是 A接通S1S2 B接通S2S3 C只接通S2 D接通S1和S3 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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．S2S3S1B．S1S3S2C．S1S2S3——青 sketch template

如图所示要使灯泡L1L2并联在 电路中则三个开关的断开闭合情况是 A．S1S3闭合S2断开 B．S2S3闭合S1断开 C 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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

在如图所示的电路中两个相同的下灯泡L1和L2分别串联一个带铁芯的电感线圈L和一个�动变阻器R闭合开关S后调整R使L1和L2�光的亮度 sketch template

在如图所示的电路中小灯泡L1和L2都标有“3V 025A 的字样电源由2节15V的干电池串联而成当S闭合后下列说法正确的是 A sketch template

如图所示要使灯L1L2串联应闭合开关 要使L1L2并联应闭合开关为了保护电路不能同时闭合开关．——青夏教育精英家教�—— sketch template

如图所示要直接测出通过灯泡L1的电流就将电流表 A．接在a处B．接在b处C．接在c处D．接在abc处都可以题目和参考答案——青夏 sketch template

灯泡L1和L2组成如图所示的电路．1若闭合开关则会�生短路现象．2要使两灯串联可只拆除b导线．3要使两灯并联可将d导线的右端 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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S1S3S1S3绝对不允许同时闭合开关S1S2S1 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中小灯泡L1和L2都标有“3V 025A 字样电源由2节15V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的电路中小灯泡L1和L2都标有“3V 025A 字样电源由2节15V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的两个电路中电源电压恒定且相等两个灯泡的规格相同．闭合开关S当�动变阻器的�片P都从中点�右�动的过程中关于灯泡L1和L2的 sketch template

如图所示的两个电路中电源电压恒定且相等两个灯泡的规格相同闭合开关S当�动变阻器的�片P都从中点�右�动的过程中关于灯泡L1和L2的 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如果要使灯L1L2串联则应闭合开关S1断开开关S2S3如果电流表示数为025A则通过L1的电流为025A．题目和 sketch template

在如图所示的电路中当S闭合后下列说法正确的是A．L1和L2都能�光 B．电路将�生短路 C．去掉其中一条导线能使L1和L2�光 D 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．S1S3 C．S2S3 D．S1S2S3 12如图5要 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S1S3而断开S2 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

题目如图所示L1L2L3为三个小灯泡V1V2为两个电压表电源是由4节干电池串联成的电池组V1的示数为3VV2的示数为5V sketch template

如图所示要使灯泡L1和L2组成并联电路应 A．只闭合S2B．只闭合S3C．只闭合S1和S3D．只闭合S2和S3 题目和参考答案——青夏 sketch template

如图所示电路中若只使灯L1�光必须闭合的开关是S3若此时使灯L2也�光必须再闭合的开关是S1．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 A．S1 B．S1S3 C．S2S3 D．S1S2S3——青夏教育精英家教�—— sketch template

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