甲、乙两只普通照明灯泡的铭牌、PZ220-25 PZ220-100那么两灯正常发光、哪个电阻比较大?..这道题不是要用P=U^2/R这个公式做吗?但是这个公式说是只能用在纯电路中吖、为什么又能用在这道题、
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 20:45:53
![甲、乙两只普通照明灯泡的铭牌、PZ220-25 PZ220-100那么两灯正常发光、哪个电阻比较大?..这道题不是要用P=U^2/R这个公式做吗?但是这个公式说是只能用在纯电路中吖、为什么又能用在这道题、](/uploads/image/z/2838222-54-2.jpg?t=%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E5%8F%AA%E6%99%AE%E9%80%9A%E7%85%A7%E6%98%8E%E7%81%AF%E6%B3%A1%E7%9A%84%E9%93%AD%E7%89%8C%E3%80%81PZ220-25+PZ220-100%E9%82%A3%E4%B9%88%E4%B8%A4%E7%81%AF%E6%AD%A3%E5%B8%B8%E5%8F%91%E5%85%89%E3%80%81%E5%93%AA%E4%B8%AA%E7%94%B5%E9%98%BB%E6%AF%94%E8%BE%83%E5%A4%A7%3F..%E8%BF%99%E9%81%93%E9%A2%98%E4%B8%8D%E6%98%AF%E8%A6%81%E7%94%A8P%3DU%5E2%2FR%E8%BF%99%E4%B8%AA%E5%85%AC%E5%BC%8F%E5%81%9A%E5%90%97%3F%E4%BD%86%E6%98%AF%E8%BF%99%E4%B8%AA%E5%85%AC%E5%BC%8F%E8%AF%B4%E6%98%AF%E5%8F%AA%E8%83%BD%E7%94%A8%E5%9C%A8%E7%BA%AF%E7%94%B5%E8%B7%AF%E4%B8%AD%E5%90%96%E3%80%81%E4%B8%BA%E4%BB%80%E4%B9%88%E5%8F%88%E8%83%BD%E7%94%A8%E5%9C%A8%E8%BF%99%E9%81%93%E9%A2%98%E3%80%81)
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