如图所示,灯L1、L2上分别标有“6V 6W”“6V 3W”字样,电源电压为9V(两只灯的电阻值不变).当开关S闭合
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![如图所示,灯L1、L2上分别标有“6V 6W”“6V 3W”字样,电源电压为9V(两只灯的电阻值不变).当开关S闭合](/uploads/image/z/3233285-53-5.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E7%81%AFL1%E3%80%81L2%E4%B8%8A%E5%88%86%E5%88%AB%E6%A0%87%E6%9C%89%E2%80%9C6V+6W%E2%80%9D%E2%80%9C6V+3W%E2%80%9D%E5%AD%97%E6%A0%B7%2C%E7%94%B5%E6%BA%90%E7%94%B5%E5%8E%8B%E4%B8%BA9V%EF%BC%88%E4%B8%A4%E5%8F%AA%E7%81%AF%E7%9A%84%E7%94%B5%E9%98%BB%E5%80%BC%E4%B8%8D%E5%8F%98%EF%BC%89%EF%BC%8E%E5%BD%93%E5%BC%80%E5%85%B3S%E9%97%AD%E5%90%88)
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