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

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

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

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，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15 1 15甲乙是两种结构不同的环状螺线管的示意图其中乙是由两个匝数相同互相对称的半圆环形螺线管串联而成的给它们按图示方�通以 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

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当开关闭合后两螺线管�相反方�运动请把乙螺线管的导线连接在右边电源上——青夏教育精英家教�—— 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根据通电线圈的扭转方�在图中画出左边螺线管的绕线方�并标出两个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

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如图螺线管P与�属环M连接组成闭合回路螺线管P左侧放有一闭合�属环N当变化的磁场穿过�属环M时�属环N受到了�左的磁场力则磁场随时间 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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

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

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

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

如图所示开关S闭合后螺线管的a端是 极小磁针将沿时针方�转动．——青夏教育精英家教�—— 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

图所示电路中请用笔画线代替导线将电路补全．要求将�动变阻器和螺线管组成串联电路闭合开关后螺线管左端为N极且�动变阻器的�片�左移动 sketch template

闭合开关S后小磁针静止时北极的指�如图所示则螺线管左端是NN极电源左端是负负极．题目和参考答案——青夏教育精英家教�—— sketch template

6．小芳用漆包线在笔杆上绕制了·一只螺线管接入如图所示的电路中闭合开关S后要使螺线管吸大头针的数量增多变阻器的�片P应� 端移动此时 sketch template

制造电阻箱时要用双线绕法如图所示．当电流变化时双线绕组 A．螺旋管内磁场�生变化B．穿过螺旋管的磁通量�生变化C．回路中一定有自感电动势 sketch template

如图中小磁针静止在电磁铁的两极之间其南北极指�和电磁铁线圈中的电流方�如图所示请你在图中画出电磁铁上线圈的缠绕方法．题目和参考答案 sketch template

如图所示电路连接中当开关S闭合时下列说法正确的是 A螺线管上端S极�片P�左移弹簧测力计示数增大B螺线管上端N极�片P�左 sketch template

小波小组在探究“通电螺线管的外部磁场实验中设计了如图1所示电路．实验时1可通过观察判断通电螺线管的磁极．2如图2所示是通电 sketch template

如图所示的电路中甲乙线圈套在同一玻璃棒上能够自由移动当开关S闭合后 A．两个线圈将�左右分开B．两个线圈将�中间靠拢C．两个线圈都 sketch template

闭合开关S后小磁针静止时N极指�如下图所示那么图中电源的正极A 一定在a端 B 一定在b端 C 在a端或b端均可 D 无法确定 sketch template

如图所示开关S闭合螺线管的右端是 极要使它的磁性增强可将�片P� 端移动．题目和参考答案 ——青夏教育精英家教�—— sketch template

13． 如右图所示条形磁铁置于水平面上电磁铁与其在同一水平面上右端固定并保持水平当电路中开关S由断开到闭合时条形磁铁一直保持静止 sketch template

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