求几道电功和电功率的题,初三的,帮帮忙,在线等,O(∩_∩)O谢谢1通电螺线管外部的磁场跟( )磁铁的磁场一样,通电螺线管的两端相当于 ( )磁铁的( ) 括号表示填空2 3度电可供电功率是15
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![求几道电功和电功率的题,初三的,帮帮忙,在线等,O(∩_∩)O谢谢1通电螺线管外部的磁场跟( )磁铁的磁场一样,通电螺线管的两端相当于 ( )磁铁的( ) 括号表示填空2 3度电可供电功率是15](/uploads/image/z/6558267-3-7.jpg?t=%E6%B1%82%E5%87%A0%E9%81%93%E7%94%B5%E5%8A%9F%E5%92%8C%E7%94%B5%E5%8A%9F%E7%8E%87%E7%9A%84%E9%A2%98%2C%E5%88%9D%E4%B8%89%E7%9A%84%2C%E5%B8%AE%E5%B8%AE%E5%BF%99%2C%E5%9C%A8%E7%BA%BF%E7%AD%89%2CO%28%E2%88%A9_%E2%88%A9%29O%E8%B0%A2%E8%B0%A21%E9%80%9A%E7%94%B5%E8%9E%BA%E7%BA%BF%E7%AE%A1%E5%A4%96%E9%83%A8%E7%9A%84%E7%A3%81%E5%9C%BA%E8%B7%9F%EF%BC%88++%EF%BC%89%E7%A3%81%E9%93%81%E7%9A%84%E7%A3%81%E5%9C%BA%E4%B8%80%E6%A0%B7%2C%E9%80%9A%E7%94%B5%E8%9E%BA%E7%BA%BF%E7%AE%A1%E7%9A%84%E4%B8%A4%E7%AB%AF%E7%9B%B8%E5%BD%93%E4%BA%8E+%EF%BC%88+%EF%BC%89%E7%A3%81%E9%93%81%E7%9A%84%EF%BC%88+%29+++%E6%8B%AC%E5%8F%B7%E8%A1%A8%E7%A4%BA%E5%A1%AB%E7%A9%BA2+3%E5%BA%A6%E7%94%B5%E5%8F%AF%E4%BE%9B%E7%94%B5%E5%8A%9F%E7%8E%87%E6%98%AF15)
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