电磁铁的磁力第一PPT模板网-WWW.1PPT.COM猜想影响电磁铁磁力大小的因素可能有哪些?猜想一:猜想二:……PPT模板:www.1ppt.com/moban/PPT素材:www.1ppt.com/sucai/PPT背景:www.1ppt.com/beijing/PPT图表:www.1ppt.com/tubiao/PPT下载:www.1ppt.com/xiazai/PPT教程:www.1ppt.com/powerpoint/资料下载:www.1ppt.com/ziliao/范文下载:www.1ppt.com/fanwen/试卷下载:www.1ppt.com/shiti/教案下载:www.1ppt.com/jiaoan/PPT论坛:www.1ppt.cnPPT课件:www.1ppt.com/kejian/语文课件:www.1ppt.com/kejian/yuwen/数学课件:www.1ppt.com/kejian/shuxue/英语课件:www.1ppt.com/kejian/yingyu/美术课件:www.1ppt.com/kejian/meishu/科学课件:www.1ppt.com/kejian/kexue/物理课件:www.1ppt.com/kejian/wuli/化学课件:www.1ppt.com/kejian/huaxue/生物课件:www.1ppt.com/kejian/shengwu/地理课件:www.1ppt.com/kejian/dili/历史课件:www.1ppt.com/kejian/lishi/第二小组实验计划研究问题:怎样让电磁铁的磁力更大?我的猜想:电磁铁磁力大小与电池的节数有关。实验器材:带绝缘层的导线、铁钉、三节电池、回形针一盒。实验步骤:制作一个电磁铁,记下导线绕在铁钉上的圈数;将一节电池连入电磁铁电路中,记下它最多能吸住回形针的个数;将二、三节电池分别连入同一电磁铁电路中,记下它最多能吸住回形针的个数。根据猜想,我们来制定实验计划。线圈数:_____电池节数:_____回形针数:_____线圈数:_____电池节数:_____回形针数:_____线圈数:_____电池节数:_____回形针数:_____线圈数:_____电池节数:_____回形针数:_____线圈数:_____电池节数:_____回形针数:_____线圈数:_____电池节数:_____回形针数:_____还有别的方法能改变电磁铁的磁力吗?