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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 Template






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sketch 5265 Shir Erika Ishikawa
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sketch 3589 Cheshire Cat by Helen Besley
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sketch 3897 dolphins playing over the sea
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tomski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 coloring
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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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某同学连接如图所示电路研究电磁铁的磁性．闭合开关通过铁钉吸引大头针数目的多来反映 若使铁钉吸引大头针的数目变多则应采取的措施是 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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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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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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如图是“研究电磁铁磁性强弱 的一组学生实验图图ABC三个线圈匝数相同D线圈的匝数比ABC线圈的匝数多已知通过的电流I2＞I1则 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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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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如图所示是探究电磁铁磁性的大小与哪些因素有关的实验要探究电磁铁磁性大小电流的有无的关系应选用 和 要探究电磁铁磁性大小与线圈匝数的关系 sketch template
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在制作研究电磁铁磁性强弱的实验中 1 已有匝数可以改变的电磁铁电源开关电流表和一小堆大头针要研究电磁铁的磁性与哪些因素有关还 sketch template
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如图是某实验小组的同学做“制作研究电磁铁 实验的示意图其中abc三图中线圈的匝数相同而d图中线圈的匝数是前面三图的2倍．已知I2 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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影响电磁铁磁性强弱的因素有 和 ．实验表明 ．电磁铁的磁性越强． 题目和参考答案——青夏教育精英家教—— 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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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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在“研究电磁铁 的实验中1所用的实验器材是一个线圈匝数可变的电磁铁电源开关动变阻器导线电流表电流表和一小堆大头针．2在 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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小文用两个相同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闭合后下列说法错误的是 A．要使电磁铁磁性增强 sketch template
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在探究通电导线在磁场中的受力方与什么有关系时一位同学做了如图abc的三个实验．图中AB表示闭合电路的一部分导线导线上的箭头表示电流的 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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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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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下表是该组同学所做实验的记录电磁铁50匝100匝实验次数 sketch template
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一同学在“探究电磁铁的磁性强弱跟什么因素有关 的实验时按图串联甲乙两个电磁铁观察图中的实验你认为该实验探究的是电磁铁磁性强弱跟 的 sketch template
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某同学连接如图所示电路研究电磁铁的磁性．闭合开关通过铁钉吸引大头针数目的多来反映 若使铁钉吸引大头针的数目变多则应采取的措施是 sketch template
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在“研究电磁铁 的实验中给你的器材是一个线圈匝数可以改变的电磁铁电源开关动变阻器电流表和适量的大头针．1该实验所要研究的问题 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某同学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 移动时电磁铁甲乙 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
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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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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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如图为某同学设计的研究磁场对通电属棒作用的实验装置．当其接通电键时有电流通过属棒观察到属棒左运动则下列说法正确的是 A．此时 sketch template
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某同学为探究电磁铁磁性与线圈匝数的关系设计了如图所示的实验他用相同的漆包线在相同的铁钉上绕制成两个电磁铁接通电源后二者吸附大头针的实验 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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某同学在“测量小灯泡电阻 的实验中设计了如图22甲所示的电路图小灯泡上标有“38V15W 字样请完成和解答下列问题 1在图22 sketch template