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小明同学在“制作研究电磁铁 的过程中使用两个相同的大铁钉绕制成电磁铁进行实验如图所示下列说法正确的是 A．电磁铁能吸引的大头针越多 Template






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sketch 5198 Sakura Claudio Pose Jester Genso
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sketch 1452 donara
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sketch 2849 dj
sketch 4997 Rafael Leite Jose Rondon
sketch 5265 Shir Erika Ishikawa

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sketch 3032 Batman by Aaron Bahary
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sketch 2624 Pikachu by sketchmaster





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tomski小明同学在“制作研究电磁铁 的过程中使用两个相同的大铁钉绕制成电磁铁进行实验如图所示下列说法正确的是 a．电磁铁能吸引的大头针越多 coloring
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为了探究电磁铁的磁性强弱跟哪些因素有关，小琴同学用漆包线表面涂有绝缘漆的导线在大铁钉上绕若干匝，制成简单的电磁铁，如图中甲、乙、丙、丁为 sketch template
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小明研究电磁铁磁性强弱与线圈中电流大小的关系设计了如图1所示的实验装置图其中E表示电磁铁．1当开关S闭合动变阻器的片P右移动时 sketch template
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小明同学在“制作研究电磁铁 的过程中使用两个相同的大铁钉绕制成电磁铁进行实验如图所示下列说法正确的 A．若将两电磁铁上部靠会 sketch template
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小明同学在“制作研究电磁铁 的过程中使用两个相同的大铁钉绕制成电磁铁进行实验如图所示下列说法正确的是 A．电磁铁能吸引的大头针越多 sketch template
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如图所示是小明同学探究电磁铁磁性强弱跟哪些因素有关的实验装置．1其中A是电磁铁C是弹簧B最好是选填序号料块 小磁铁 sketch template
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如图所示是小明同学探究电磁铁磁性强弱跟哪些因素有关的实验装置．1其中A是电磁铁C是弹簧B最好是选填序号料块 小磁铁 sketch template
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如图所示是小明同学探究电磁铁磁性强弱跟哪些因素有关的实验装置．1其中A是电磁铁C是弹簧B最好是选填序号料块 小磁铁 sketch template
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10．如图所示是小新同学做“制作研究电磁铁 实验的示意图他在实验中现大铁钉A比B能吸引更多的大头针根据图示的实验现象他得出的结论是当 sketch template
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在探究“影响电磁铁磁性强弱的因素 的实验中小明用铁钉制成简易电磁铁甲乙并设计了如图所示的电路．1实验中是通过吸引大头针的数量来显示电 sketch template
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为了探究“电磁铁磁性的强弱与线圈匝数的关系 小明利用两个相同规格的大铁钉和漆包线自制了两个匝数不同的线圈并备用了适量的大头针．请你帮助小 sketch template
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如图所示是小明同学探究电磁铁磁性强弱跟哪些因素有关的实验装置．1其中A是电磁铁C是弹簧B最好是选填序号料块 小磁铁 sketch template
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在探究“影响电磁铁磁性强弱的因素 实验中小明制成简易电磁铁甲乙并设计了如图所示的电路1当动变阻器片左移动时电磁铁甲乙吸引 sketch template
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如图是小明研究“影响电磁铁磁性强弱因素 的装置图它是由电源动变阻器开关带铁芯的螺线管和自制的针式刻度板组成．通过观察指针B偏转角度的 sketch template
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小张同学在做“制作研究电磁铁 的实验中猜想电磁铁的磁性强弱应该与电流大小有关还与线圈的匝数有关．为此他用铁钉和漆包线绕制成匝数不同的甲 sketch template
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实验课上小明同学自制电磁铁并探究“影响电磁铁的磁性强弱的因素 ．他用大铁钉和漆包线绕制成匝数不同的甲乙两个电磁铁并利用符合实验要求的电源 sketch template
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小明研究电磁铁磁性强弱与线圈中电流大小的关系设计了如图所示的实验装置图其中E表示电磁铁1当开关S闭合动变阻器的片P右移动时 sketch template
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在探究“影响电磁铁磁性强弱的因素 实验中小明制成简易电磁铁甲乙并设计了如图所示的电路1当动变阻器片左移动时电磁铁甲乙吸引 sketch template
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如图所示是某学习小组同学设计的研究“电磁铁磁性强弱 的实验电路图实验记录如下 1要判断电磁铁的磁性强弱可观察 来确定2比较下 sketch template
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如图所示是小明同学探究电磁铁跟哪些因素有关的实验装置A是电磁铁B是弹簧C是铁块图示中的弹簧长度为15cm Ab两接线柱之间的线圈匝 sketch template
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某同学在做“探究电磁铁 实验中使用两个相同的大铁钉绕制成电磁铁进行实验如图所示下列说法中正确的是A．要使电磁铁磁性增强应将变阻器的 sketch template
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小明同学在“制作研究电磁铁 的过程中使用两个相同的大铁钉绕制成电磁铁进行实验如图所示下列说法正确的 A．若将两电磁铁上部靠会 sketch template
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10．如图4所示是研究“电磁铁磁性强弱 的实验电路图．开关的 可控制磁性的有无要改变通过电磁铁中的电流大小可通过改变 实现要判断电磁铁的 sketch template
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小明同学在“制作研究电磁铁 的过程中使用两个相同的大铁钉绕制成电磁铁进行实验如图所示下列说法正确的是 A电磁铁能吸引的大头针越 sketch template
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计算轴磁铁和环状磁铁的磁场附Matlab代码 条形磁铁磁感应强度计算仿真 CSDN博客 sketch template
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小明用导线绕在铁钉上接入如图所示的电路中制成了一个电磁铁闭合开关S小磁针静止时左端应为 极当动变阻器的片P左移动时电磁铁的 sketch template
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条形磁铁的磁感线分布 简易物理物理动画 sketch template
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某同学用两个相同的大铁钉绕制成电磁铁进行实验如图所示在“研究电磁铁 的实验过程中当S闭合后下列说法不正确的是 A．B线圈的匝数多 sketch template
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如图所示是小王同学探究“电磁铁磁性强弱跟电流大小的关系的电路图．小王在探究过程中你认为以下说法正确的是 A．动变阻器的片a端动 sketch template
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如图所示是某学习小组同学设计的研究“电磁铁磁性强弱”的实验电路图。 1要改变电磁铁线圈中的电流大小，可通过移动 来实现；要判断电磁铁的磁性 sketch template
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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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星期天小明在练小提琴之前需要调整琴弦的松紧程度他这样做的目的是改变琴声的 悠扬的琴声是由于琴弦的 出的琴声是通过 传播到们耳中的 sketch template
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小明在研究电磁铁的实验中“改变电磁铁的接线增加线圈的匝数同时调节动变阻器使电流保持不变观察电磁铁吸引曲别针的数目有什么变化 ．他这 sketch template
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小明所在的小组在“研究电磁铁的磁性强弱跟哪些因素有关 的实验中按下图串联甲乙两个电磁铁并移动动变阻器的片P进行了多次实验记录如下 sketch template
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小明同学在“制作研究电磁铁 的过程中使用两个相同的大铁钉绕制成电磁铁进行实验如图所示下列说法正确的是A电磁铁能吸引的大头针越多 sketch template
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电磁铁的特点是电磁铁的磁性有无可以由电流的通断电流的通断控制2电磁铁的磁极方可以由电流方电流方方来控制3电磁铁的磁性强弱 sketch template