如图所示的电路电源电压不变滑动变阻器的最大值为20欧姆闭合开关当滑动变阻器的滑片p滑到a端时小灯泡完全熄灭电流表的示数为0.3a当滑动变阻器的滑片p滑到b端时小灯泡恰好正常发光电流
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 10:33:38
![如图所示的电路电源电压不变滑动变阻器的最大值为20欧姆闭合开关当滑动变阻器的滑片p滑到a端时小灯泡完全熄灭电流表的示数为0.3a当滑动变阻器的滑片p滑到b端时小灯泡恰好正常发光电流](/uploads/image/z/3359759-23-9.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%E7%9A%84%E7%94%B5%E8%B7%AF%E7%94%B5%E6%BA%90%E7%94%B5%E5%8E%8B%E4%B8%8D%E5%8F%98%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%E4%B8%BA20%E6%AC%A7%E5%A7%86%E9%97%AD%E5%90%88%E5%BC%80%E5%85%B3%E5%BD%93%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8%E7%9A%84%E6%BB%91%E7%89%87p%E6%BB%91%E5%88%B0a%E7%AB%AF%E6%97%B6%E5%B0%8F%E7%81%AF%E6%B3%A1%E5%AE%8C%E5%85%A8%E7%86%84%E7%81%AD%E7%94%B5%E6%B5%81%E8%A1%A8%E7%9A%84%E7%A4%BA%E6%95%B0%E4%B8%BA0.3a%E5%BD%93%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8%E7%9A%84%E6%BB%91%E7%89%87p%E6%BB%91%E5%88%B0b%E7%AB%AF%E6%97%B6%E5%B0%8F%E7%81%AF%E6%B3%A1%E6%81%B0%E5%A5%BD%E6%AD%A3%E5%B8%B8%E5%8F%91%E5%85%89%E7%94%B5%E6%B5%81)
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