如图所示的双线螺线管当开关s闭合时其铁芯ab A．a端为s极b端为n极b．a端为n极b端为s极c．不能被磁化d．无法确定是否被磁化 Sketch Coloring Page

如图所示的双线螺线管当开关s闭合时其铁芯ab A．a端为s极b端为n极b．a端为n极b端为s极c．不能被磁化d．无法确定是否被磁化 Template

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tomski如图所示的双线螺线管当开关s闭合时其铁芯ab a．a端为s极b端为n极b．a端为n极b端为s极c．不能被磁化d．无法确定是否被磁化 coloring

如图所示的双线螺线管当开关S闭合时其铁芯AB A．A端为S极B端为N极B．A端为N极B端为S极C．不能被磁化D．无法确定是否被磁化 sketch template

如图所示两通电螺线管在靠�时相互排斥请在乙图中标出通电螺线管的NS极螺线管中电流的方�及电源的正负极．题目和参考答案——青夏教育 sketch template

如图所示开关闭合后螺线管通电产生磁场位于螺线管右则的小磁针会�生偏转．请画出通电螺线管的NS极并用箭头在小磁针N极的下方标出其转动的 sketch template

如图所示的螺线管的匝数n=1500横截面积S=20cm2电阻r=15Ω与螺线管串联的外电阻R1=10ΩR2=35Ω若穿过螺线管的 sketch template

如图所示通电螺线管�围的小磁针静止时小磁针N极指�正确的是 A．abcB．abdC．acdD．bcd 题目和参考答案 sketch template

螺线管螺线管线圈通电螺线管的磁场第10页大山谷图库 sketch template

通电螺线管的NS极如图所示请在图12中括号内标出电源的正负极和小磁针静止时的NS极 ——青夏教育精英家教�—— sketch template

在如图甲所示的电路中螺线管匝数n=1500横截面积S=20cm2螺线管导线电阻r=10ΩR1=40ΩR2=50ΩC sketch template

如图甲所示，匝数为n、总电阻为r、横截面积为S的竖直螺线管与两足够长的固定平行光�导轨相连，导轨间距为L，倾角为。导轨间有磁感应强度大小为 sketch template

如图所示的螺线管的匝数n=1500横截面积S=20cm2电阻r=15Ω与螺线管串联的外电阻R1=10ΩR2=35Ω．若穿过螺线管的 sketch template

如图a所示导体环A的正上方有一个竖直放置的螺线管螺线管与导线abcd构成回路导线所围区域内有一个垂直纸面的匀强磁场B其大小随时间按 sketch template

如图所示，闭合开关后，两个通电螺线管中间的小磁针N极�下指。请你在括号内标出电源的“ ”或“﹣”极，并画出乙通电螺线管的绕线方法。百度教育 sketch template

如图所示根据通电螺线管的磁感线方�可判断通电螺线管左端为 极电源的a端为 极小磁针静止时的b端为 极 A 南正北B北负北 sketch template

1．如图所示甲乙两个螺线管靠很�串联在同一电路中 1标出螺线管甲的N极和S极 2若使两螺线管互相排斥试在图中画出螺线管乙的 sketch template

螺线管通电后小磁针静止时指�如图所示请在图中标出通电螺线管的NS极并标出电源的正负极题目和参考答案——青夏教育精英家教�—— sketch template

12．如图所示螺线管B置于闭合�属圆环A的轴线上当B中通过的电流I减小时 A．环A有缩小的趋势 B．环A有扩张的趋势 C．螺线管B有 sketch template

在闭合螺线管线路中的开关S后小磁针的北极指�如图所示画出螺线管的绕线方式．——青夏教育精英家教�—— sketch template

如图所示当开关闭合后通电螺线管上方的小磁针受力的作用保持静止则通电螺线管的右端是 极电源的右端是 极——青夏教育精英家教�—— sketch template

如图所示螺线管下有一可自由转动的小磁针闭合开关S小磁针静止时N极指�螺线管的 端填“A 或“B ． A 解析由右手螺旋定则判断出通电 sketch template

如图所示均匀绕制的螺线管水平放置在其正中心的上方附�用绝缘绳水平吊起通电直导线AA与螺线管垂直A导线中的电流方�垂直纸面�里开关S sketch template

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如图所示请根据通电螺线管的电流方�标出通电螺线管的NS极和电源的正负极．题目和参考答案——青夏教育精英家教�—— sketch template

如图所示当开关闭合后通电螺线管上方的小磁针受力的作用保持静止则通电螺线管的右端是 极电源的右端是 极——青夏教育精英家教�—— sketch template

根据图中通电螺线管通电后小磁针静止时N极所指的方�标出磁感线方�通电螺线管的NS极并在括号内标出电源的正负极．题目和参考答案——青 sketch template

将一螺线管放到洒有均匀铁�的桌面上电路连接情况如图所示则表述正确的是A闭合开关S螺线管左端是N极B闭合开关S铁�变成磁感线说明 sketch template

如图所示A为螺线管B为悬挂在弹簧测力计下的条形磁铁当开关S断开时弹簧测力计的示数将电流表的示数将 ——青夏教育精英家教�—— sketch template

如图所示当闭合电键S后通电螺线管Q端附�的小磁针N极转�Q端则 A．通电螺线管的Q端为N极电源a端为正极B．通电螺线骨的Q端为N极 sketch template

通电螺线管上方放一个小磁针小磁针静止时的指�如图所示则 A．a端为电源正极B．b端为电源正极 C．c端为通电螺线管S极 D．d端为通电 sketch template

在制造精密电阻时．常常采用双线绕法．即把电阻丝从螺线管一端绕到另一端再从另一端绕回来如果电流方�如图所示那么 A螺线管左右两端都没 sketch template

如图所示闭合开关S后请画出螺线管�围的磁感线分布和标出小磁针的N极．题目和参考答案——青夏教育精英家教�—— sketch template

如图所示闭合开关S通电螺线管右侧的小磁针静止时小磁针的N极指�左则电源的右端为 极若要使通电螺线管的磁性增强�动变阻器的�片P应� sketch template

在图中标出通电螺线管A端和永磁体B端的磁极性并标出磁感线的方�．——青夏教育精英家教�—— sketch template

如图所示在通电密绕长螺线管靠�左端处吊一�属环a处于静止状态在其内部也吊一�属环b处于静止状态两环环面均与螺线管的轴线垂直且环中心恰在 sketch template

题目内容 如图所示，根据通电螺线管的磁感线方�，可判断通电螺线管左端为 S 极，电源的a端为 正百度教育 sketch template

两个通电螺线管它们的一端位于图甲中的虚线框内为探究两个通电螺线管之间的磁场方�把一个小磁针分别放在方框内9个点的位置上记录小磁针在各 sketch template

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