一道物理电学问题请问图中电压表测得是l1与l2的电压吗?且L1灯亮吗?
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![一道物理电学问题请问图中电压表测得是l1与l2的电压吗?且L1灯亮吗?](/uploads/image/z/8677449-9-9.jpg?t=%E4%B8%80%E9%81%93%E7%89%A9%E7%90%86%E7%94%B5%E5%AD%A6%E9%97%AE%E9%A2%98%E8%AF%B7%E9%97%AE%E5%9B%BE%E4%B8%AD%E7%94%B5%E5%8E%8B%E8%A1%A8%E6%B5%8B%E5%BE%97%E6%98%AFl1%E4%B8%8El2%E7%9A%84%E7%94%B5%E5%8E%8B%E5%90%97%3F%E4%B8%94L1%E7%81%AF%E4%BA%AE%E5%90%97%3F)
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