深夜家里的台灯比傍晚时要亮.电能表测得:只亮这盏台灯时,在四分十秒内,电能表转了两圈,电能表的铭牌:1800r/kwh 电灯:220v 25w1)球台灯两段实际电压和功率?2)估算中用到哪些近似?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/02 20:46:24
![深夜家里的台灯比傍晚时要亮.电能表测得:只亮这盏台灯时,在四分十秒内,电能表转了两圈,电能表的铭牌:1800r/kwh 电灯:220v 25w1)球台灯两段实际电压和功率?2)估算中用到哪些近似?](/uploads/image/z/8921241-9-1.jpg?t=%E6%B7%B1%E5%A4%9C%E5%AE%B6%E9%87%8C%E7%9A%84%E5%8F%B0%E7%81%AF%E6%AF%94%E5%82%8D%E6%99%9A%E6%97%B6%E8%A6%81%E4%BA%AE.%E7%94%B5%E8%83%BD%E8%A1%A8%E6%B5%8B%E5%BE%97%EF%BC%9A%E5%8F%AA%E4%BA%AE%E8%BF%99%E7%9B%8F%E5%8F%B0%E7%81%AF%E6%97%B6%2C%E5%9C%A8%E5%9B%9B%E5%88%86%E5%8D%81%E7%A7%92%E5%86%85%2C%E7%94%B5%E8%83%BD%E8%A1%A8%E8%BD%AC%E4%BA%86%E4%B8%A4%E5%9C%88%2C%E7%94%B5%E8%83%BD%E8%A1%A8%E7%9A%84%E9%93%AD%E7%89%8C%EF%BC%9A1800r%2Fkwh+%E7%94%B5%E7%81%AF%EF%BC%9A220v+25w1%EF%BC%89%E7%90%83%E5%8F%B0%E7%81%AF%E4%B8%A4%E6%AE%B5%E5%AE%9E%E9%99%85%E7%94%B5%E5%8E%8B%E5%92%8C%E5%8A%9F%E7%8E%87%3F2%EF%BC%89%E4%BC%B0%E7%AE%97%E4%B8%AD%E7%94%A8%E5%88%B0%E5%93%AA%E4%BA%9B%E8%BF%91%E4%BC%BC%3F)
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