(单/多选)某同学用电磁打点计时器做实验时,在纸带上留下的不是圆点,而是一列短线,这可能是因为( )A.打点计时器错接在直流电源上 B.电源频率不稳定C.打点的振针压得过紧 D.打点的振
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/25 14:21:12
![(单/多选)某同学用电磁打点计时器做实验时,在纸带上留下的不是圆点,而是一列短线,这可能是因为( )A.打点计时器错接在直流电源上 B.电源频率不稳定C.打点的振针压得过紧 D.打点的振](/uploads/image/z/4804586-26-6.jpg?t=%EF%BC%88%E5%8D%95%2F%E5%A4%9A%E9%80%89%EF%BC%89%E6%9F%90%E5%90%8C%E5%AD%A6%E7%94%A8%E7%94%B5%E7%A3%81%E6%89%93%E7%82%B9%E8%AE%A1%E6%97%B6%E5%99%A8%E5%81%9A%E5%AE%9E%E9%AA%8C%E6%97%B6%2C%E5%9C%A8%E7%BA%B8%E5%B8%A6%E4%B8%8A%E7%95%99%E4%B8%8B%E7%9A%84%E4%B8%8D%E6%98%AF%E5%9C%86%E7%82%B9%2C%E8%80%8C%E6%98%AF%E4%B8%80%E5%88%97%E7%9F%AD%E7%BA%BF%2C%E8%BF%99%E5%8F%AF%E8%83%BD%E6%98%AF%E5%9B%A0%E4%B8%BA%EF%BC%88+%EF%BC%89A.%E6%89%93%E7%82%B9%E8%AE%A1%E6%97%B6%E5%99%A8%E9%94%99%E6%8E%A5%E5%9C%A8%E7%9B%B4%E6%B5%81%E7%94%B5%E6%BA%90%E4%B8%8A+B.%E7%94%B5%E6%BA%90%E9%A2%91%E7%8E%87%E4%B8%8D%E7%A8%B3%E5%AE%9AC.%E6%89%93%E7%82%B9%E7%9A%84%E6%8C%AF%E9%92%88%E5%8E%8B%E5%BE%97%E8%BF%87%E7%B4%A7+D.%E6%89%93%E7%82%B9%E7%9A%84%E6%8C%AF)
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