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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tomski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 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

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

在物理学中磁感应强度用字母 B 表示国际单位是特斯拉符号是T表示磁场的强弱磁感应强度B越大磁场越强磁感线形象直观描述磁场 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，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

通电螺线管内部放一个小磁针小磁针静止时的指�如图所示请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

如图所示已知闭合S时通电螺线管的磁感线方�．请你�在图中标出处于静止状态的小磁针的NS极�标出电源的正负极．题目和参考答案——青夏 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

小磁针放在通电螺线管附�位置如图所示标出各个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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静止时小磁针N极指�下当ab棒水平�右运动时棒内电流方�由a到b 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

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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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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

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

3．如下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——青夏教育精英家教�—— sketch template

如图所示的螺线管中通以正常情况下的电流试标出旁边小磁针静止时的NS极．题目和参考答案 ——青夏教育精英家教�—— 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

电磁铁旁小磁针静止时所指的方�如图所示试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

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

如图所示标出小磁针的N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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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 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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

如图甲乙所示按小磁针的指�在图中标出螺线管的极性电流的方�和电源的“ 极．——青夏教育精英家教�—— sketch template

如图所示，一条形磁体的�围放着能自由转动的甲、乙、丙、丁四根小磁针，静止时，画错的是 A 甲 B 乙 C 丙 D 丁百度教育 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

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

1如图所示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 2把图中的拉线开关白炽灯泡 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

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