如图,电源电压保持不变,滑动变阻器最大阻值为40欧姆,R2等于20欧姆,小灯泡的电阻为0欧姆且保持不变,当S1,S2均断开且滑片p置于滑动变阻器中点时,小灯泡的功率为10w,求:(1)当S1,S2均闭合且
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/15 15:45:10
![如图,电源电压保持不变,滑动变阻器最大阻值为40欧姆,R2等于20欧姆,小灯泡的电阻为0欧姆且保持不变,当S1,S2均断开且滑片p置于滑动变阻器中点时,小灯泡的功率为10w,求:(1)当S1,S2均闭合且](/uploads/image/z/4308174-54-4.jpg?t=%E5%A6%82%E5%9B%BE%2C%E7%94%B5%E6%BA%90%E7%94%B5%E5%8E%8B%E4%BF%9D%E6%8C%81%E4%B8%8D%E5%8F%98%2C%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8%E6%9C%80%E5%A4%A7%E9%98%BB%E5%80%BC%E4%B8%BA40%E6%AC%A7%E5%A7%86%2CR2%E7%AD%89%E4%BA%8E20%E6%AC%A7%E5%A7%86%2C%E5%B0%8F%E7%81%AF%E6%B3%A1%E7%9A%84%E7%94%B5%E9%98%BB%E4%B8%BA0%E6%AC%A7%E5%A7%86%E4%B8%94%E4%BF%9D%E6%8C%81%E4%B8%8D%E5%8F%98%2C%E5%BD%93S1%2CS2%E5%9D%87%E6%96%AD%E5%BC%80%E4%B8%94%E6%BB%91%E7%89%87p%E7%BD%AE%E4%BA%8E%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8%E4%B8%AD%E7%82%B9%E6%97%B6%2C%E5%B0%8F%E7%81%AF%E6%B3%A1%E7%9A%84%E5%8A%9F%E7%8E%87%E4%B8%BA10w%2C%E6%B1%82%EF%BC%9A%EF%BC%881%EF%BC%89%E5%BD%93S1%2CS2%E5%9D%87%E9%97%AD%E5%90%88%E4%B8%94)
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