如图所示通电螺线管置于闭合�属环a的轴线上当螺线管中电流i减小时 A环有缩小的趋势以阻碍原磁通量的减小 B环有扩大的趋势以阻碍原 Sketch Coloring Page

如图所示通电螺线管置于闭合�属环a的轴线上当螺线管中电流i减小时 A环有缩小的趋势以阻碍原磁通量的减小 B环有扩大的趋势以阻碍原 Template

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sketch #5093 Pedro Henrique Jordan Coquet

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sketch #2856 Merry Christmas from Melany Campano Laos Komlós László

tomski如图所示通电螺线管置于闭合�属环a的轴线上当螺线管中电流i减小时 a环有缩小的趋势以阻碍原磁通量的减小 b环有扩大的趋势以阻碍原 coloring

如图所示通电螺线管置于闭合�属环a的轴线上当螺线管中电流I增大时 A环中感应电流方�与图中标示的方�相同B环中感应电流方�与图中 sketch template

中考物理考点解读：通电螺线管的磁场知乎 sketch template

中考物理考点解读：通电螺线管的磁场知乎 sketch template

中考物理考点解读：通电螺线管的磁场知乎 sketch template

中考物理考点解读：通电螺线管的磁场知乎 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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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NS极并用箭头在小磁针N极的下方标出其转动的 sketch template

1．如图所示通电螺线管的上方有一个静止的小磁针轴线上右边的圆圈表示闭合电路中一部分导体的横截面．下列判断正确的是 A．通电螺线管的d端 sketch template

中考物理考点解读：通电螺线管的磁场知乎 sketch template

如图所示通电螺线管置于闭合�属环a的轴线上当螺线管中电流I减小时 A环有缩小的趋势以阻碍原磁通量的减小 B环有扩大的趋势以阻碍原 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

通电螺线管要点解读知乎 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

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

通电螺线管要点解读知乎 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在开关S由闭合到断开的过程中通电螺线管的磁性强弱和极性将 A增强改变B减弱不变C增强不变D减弱改变题目和参考 sketch template

通电螺线管的NS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NS极 ——青夏教育精英家教�—— sketch template

如图所示套在光�玻璃管上的两个轻质螺线管AB通电后互相排斥试画出B螺线管的绕线方�．题目和参考答案——青夏教育精英家教�—— sketch template

在如图所示的通电螺线管旁有一静止磁体请标出电源的正极及螺线管磁感线的方�．题目和参考答案——青夏教育精英家教�—— sketch template

如图所示通电螺线管的左端为 S 极则 A．小磁针c 端为N 极电源a 端为负极 B．小磁针c 端为正极 C．小 sketch template

19．如图所示abc三枚小磁针分别放在通电螺线管的正上方管内和右侧当开关闭合时这些小磁针静止时小磁针的N极指�为 A．ab 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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

如图所示，通电螺线管形成的磁场中有两个小磁铁A和B，其中B有一半在螺线管内部，一半在外部，则它们受力的方�分别为（） A �左，�左 B sketch template

如图所示根据通电螺线管中的电流方�标出静止在通电螺线管上方的小磁针的“N “S 极．题目和参考答案——青夏教育精英家教�—— sketch template

如下图所示 根据小磁针的方�判断通电螺线管的极性及电源正负极——青夏教育精英家教�—— sketch template

如图所示通电螺线管置于闭合�属环A的轴线上A环在螺线管的正中间当螺线管中的 刷刷题APP sketch template

如图所示通电螺线管�围能自由转动的小磁针abcd已静止指�正确的是 A 小磁针a B 小磁针b C 小磁针c D 小磁针 sketch template

如图所示根据小磁针静止时的指�画出通电螺线管中的电流方�电源的正负极及通电螺线管的NS极题目和参考答案——青夏教育精英家教�—— 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．abcB．abdC．acdD．bcd 题目和参考答案 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

1．如图所示通电螺线管置于闭合�属环A的轴线上A环在螺线管的正中间当螺线管中的电流逐渐减小时 A．A环有收缩的趋势 ——青夏教育 sketch template

中考物理考点解读：通电螺线管的磁场知乎 sketch template

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