18．如图所示根据小磁针静止时n极的指�标出磁感线的方�电磁铁磁极的极性导线中的电流的方�及电源的正负极19．如图所示通电后欲使 Sketch Coloring Page

18．如图所示根据小磁针静止时n极的指�标出磁感线的方�电磁铁磁极的极性导线中的电流的方�及电源的正负极19．如图所示通电后欲使 Template

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tomski18．如图所示根据小磁针静止时n极的指�标出磁感线的方�电磁铁磁极的极性导线中的电流的方�及电源的正负极19．如图所示通电后欲使 coloring

如图所示依小磁针静止时N极的指�标出磁感线的方�电磁铁磁极的极性导线中电流的方�及电源的正负极．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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NS极 题目和参考答案——青夏教育精英家教�—— sketch template

如图所示依小磁针静止时N极的指�标出磁感线的方�电磁铁磁极的极性导线中电流的方�及电源的正负极．题目和参考答案——青夏教育精英家教�—— sketch template

通电螺线管的磁感线方�如图，根据磁感线方�标出电源的正极和静止小磁针的N极。 sketch template

1判断磁体的磁极或磁感线的方�可利用已知磁极的小磁针．如图所示根据小磁针静止的指�标出U形磁体的NS磁极和磁感线的方�．2根据 sketch template

如图所示请根据电源的“ 极在图上标出小磁针静止时的N极并画出通电螺线管的磁感线．题目和参考答案——青夏教育精英家教�—— sketch template

请根据图中小磁针静止时的指�标出通电螺线管的NS极和电源的正负极——青夏教育精英家教�—— sketch template

18．如图所示所在通电螺丝管内部中间的小磁针静止时N极指�右端则电源的c端为 极螺线管的a端为 极——青夏教育精英家教�—— sketch template

中考物理考点解读：通电螺线管的磁场知乎 sketch template

在如图所示的实验装置中玻璃球内的导线是分开的小磁针处于静止状态．当用酒精灯把玻璃球加热到红炽状态时�现小磁针�生了偏转根据以上现象可知 sketch template

1判断磁体的磁极或磁感线的方�可利用已知磁极的小磁针．如图所示根据小磁针静止的指�标出U形磁体的NS磁极和磁感线的方�．2根据 sketch template

18．如图所示根据小磁针静止时N极的指�标出磁感线的方�电磁铁磁极的极性导线中的电流的方�及电源的正负极19．如图所示通电后欲使 sketch template

如图所示已知磁体�围磁感线的形状或某点所放的小磁针静止时的位置1试在图甲中标出ABC三点的磁感线方�2在图乙中标出放在AB 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请根据小磁针的NS极用箭头标出磁感线的方�并用“ “ 符号在括号内标出电源正负极．题目和参考答案——青夏教育精英家教�—— sketch template

71．在如图所示的实验装置中玻璃球内的导线是分开的小磁针处于静止状态．当用酒精灯把玻璃球加热到红炽状态时�现小磁针�生了偏转根据以上 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

如图所示根据小磁针静止时的指�在图中标出通电螺线管的NS极和电流方�．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，请根据通电螺线管�围磁感线的方�判断，电源的上端为电源的 极，小磁针的下端为 极。百度教育 sketch template

如图12所示根据小磁针的指�确定电源的正负极并表出电流表的正负接线柱 图11 ——青夏教育精英家教�—— sketch template

如图所示根据图中信息请标出电源的“ 极和小磁针的“N 极 解析因为磁感线总是从磁体的N即出�所以螺旋管的左端为N极即小磁针的右 sketch template

在如图中根据通电螺线管的电流方�分别标出通电螺线管和小磁针的N极和S极．——青夏教育精英家教�—— 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用细线悬挂一个重为5N的小球使其在空中�动如图甲所示．在图中画出小球�到A点时受到的重力示意图．2如图乙所示的螺线管接入电路中 sketch template

如图所示请根据闭合开关后小磁针的指�标出电源的正极负极通电螺线管的N极和图中磁感线的方�．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

18．如图3所示杠杆在力F1F2作用下处于平衡状态L1为F1的力臂请在图中作出F2的力臂L2及力F1——青夏教育精英家教�—— sketch template

导线在通电的瞬间放在其下面静止的小磁针转�如图所示画出导线中电流方�．题目和参考答案——青夏教育精英家教�—— sketch template

如图甲所示根据通入电流的方�标出U形电磁铁的NS极在图乙中画出导线的绕法题目和参考答案——青夏教育精英家教�—— sketch template

中考物理考点解读：通电螺线管的磁场知乎 sketch template

如图1所示小明在蹄形磁体的磁场中放置一根与螺线管连接的导体棒ab当ab棒水平�右运动时�现小磁针N极转至右边根据课堂上学习的相关知识 sketch template

1如图所示小磁针在纸面内能自由转动．则闭合开关后下列说法正确的是A．小磁针将沿顺时针方�转动B．小磁针将沿逆时针方�转动C．当�动 sketch template

如图所示根据小磁针的指�在图中标出螺线管的极名电流的方�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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