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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 5348
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sketch 3359 &#;In love and lonely&#; by Irul Ventura
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sketch 3047 Oppa Pika Style by Itz Rakhi
sketch 1232 Dylan Thomas
sketch 5131 Miley Cyrus by Vannak Von
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sketch 3473 Finn by Luana Santos
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sketch 2627 Taz 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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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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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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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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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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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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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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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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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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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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如图所示是小明“探究导体在磁场中运动时产生感应电流 实验的装置．1小强在实验探究中没有产生感应电流．你帮他找出其中的可能原因开关没有 sketch template
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如图在研究电磁铁磁性强弱的实验中为了研究电磁铁的磁性强弱跟线圈匝数的关系小芳同学的做法是先把变阻器片的接线柱接电磁铁的A点然后再改 sketch template
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小平同学利用如图所示装置研究电磁铁磁场的强弱与哪些因素有关．图中A是悬挂在弹簧下的铁块B是电磁铁的铁芯S是转换开关S接1时连入电路的线圈 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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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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【学大揭秘探秘磁铁，解锁酷炫创意新玩法 回形针 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
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小宇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．电磁铁能吸引的大头针越多表明 sketch template
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四、探究——影响电磁铁磁性强弱的因素 Word文档在线阅读与下载 免费文档 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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为了探究电磁铁的磁性强弱与哪些因素有关某同学使用两个相同的大铁钉绕制成电磁铁进行实验如图所示．则下列说法中正确的是 A 片P右 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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一体成型电磁铁导磁套的制作方法 sketch template
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2017 2018九年级物理全册电与磁习题新版新人教版 Word文档免费下载 亿佰文档 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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如图所示在电磁铁的正上方用弹簧挂一条形磁铁．当开关闭合后条形磁铁与电磁铁的相互作用为 当片P从a端到b端的动过程中弹簧的长度会变 sketch template
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小张同学在参加学校“研究性学习活动小组 时选择了“探究磁铁的磁性强弱是否与温度有关 的课题．他的探究过程如下将一条形磁铁的一端固定在铁架 sketch template
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某同学在“研究电磁铁 的实验中设计了一个方案改变电磁铁的接线使通电线圈的匝数增多同时调整变阻器的片使电流保持不变观察电磁铁吸引 sketch template