如图11所示,电源电压保持不变,当开关S1闭合,S2断开,滑动变阻器R0的滑片从A处移至B处时,电压表先后的示数之比为4:3,R1先后的功率之比为4:9;保持滑片在B处,当S1断开,S2闭合,R2与R0的总功率为9W
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/04 01:38:58
![如图11所示,电源电压保持不变,当开关S1闭合,S2断开,滑动变阻器R0的滑片从A处移至B处时,电压表先后的示数之比为4:3,R1先后的功率之比为4:9;保持滑片在B处,当S1断开,S2闭合,R2与R0的总功率为9W](/uploads/image/z/3719635-43-5.jpg?t=%E5%A6%82%E5%9B%BE11%E6%89%80%E7%A4%BA%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%E5%BD%93%E5%BC%80%E5%85%B3S1%E9%97%AD%E5%90%88%2CS2%E6%96%AD%E5%BC%80%2C%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8R0%E7%9A%84%E6%BB%91%E7%89%87%E4%BB%8EA%E5%A4%84%E7%A7%BB%E8%87%B3B%E5%A4%84%E6%97%B6%2C%E7%94%B5%E5%8E%8B%E8%A1%A8%E5%85%88%E5%90%8E%E7%9A%84%E7%A4%BA%E6%95%B0%E4%B9%8B%E6%AF%94%E4%B8%BA4%3A3%2CR1%E5%85%88%E5%90%8E%E7%9A%84%E5%8A%9F%E7%8E%87%E4%B9%8B%E6%AF%94%E4%B8%BA4%3A9%EF%BC%9B%E4%BF%9D%E6%8C%81%E6%BB%91%E7%89%87%E5%9C%A8B%E5%A4%84%2C%E5%BD%93S1%E6%96%AD%E5%BC%80%2CS2%E9%97%AD%E5%90%88%2CR2%E4%B8%8ER0%E7%9A%84%E6%80%BB%E5%8A%9F%E7%8E%87%E4%B8%BA9W)
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