如图,ABC是相同的白炽灯,L是自感系数很大,电阻很小的自感线圈,奖S闭合,则A,B,C亮度如何改变选()A.BC同时亮,A后亮.B.ABC同时亮,然后A灯逐渐暗最后熄灭C.A灯一直不亮,只有BC亮D.ABC同时亮,并且
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![如图,ABC是相同的白炽灯,L是自感系数很大,电阻很小的自感线圈,奖S闭合,则A,B,C亮度如何改变选()A.BC同时亮,A后亮.B.ABC同时亮,然后A灯逐渐暗最后熄灭C.A灯一直不亮,只有BC亮D.ABC同时亮,并且](/uploads/image/z/10976171-59-1.jpg?t=%E5%A6%82%E5%9B%BE%2CABC%E6%98%AF%E7%9B%B8%E5%90%8C%E7%9A%84%E7%99%BD%E7%82%BD%E7%81%AF%2CL%E6%98%AF%E8%87%AA%E6%84%9F%E7%B3%BB%E6%95%B0%E5%BE%88%E5%A4%A7%2C%E7%94%B5%E9%98%BB%E5%BE%88%E5%B0%8F%E7%9A%84%E8%87%AA%E6%84%9F%E7%BA%BF%E5%9C%88%2C%E5%A5%96S%E9%97%AD%E5%90%88%2C%E5%88%99A%2CB%2CC%E4%BA%AE%E5%BA%A6%E5%A6%82%E4%BD%95%E6%94%B9%E5%8F%98%E9%80%89%EF%BC%88%EF%BC%89A.BC%E5%90%8C%E6%97%B6%E4%BA%AE%2CA%E5%90%8E%E4%BA%AE.B.ABC%E5%90%8C%E6%97%B6%E4%BA%AE%2C%E7%84%B6%E5%90%8EA%E7%81%AF%E9%80%90%E6%B8%90%E6%9A%97%E6%9C%80%E5%90%8E%E7%86%84%E7%81%ADC.A%E7%81%AF%E4%B8%80%E7%9B%B4%E4%B8%8D%E4%BA%AE%2C%E5%8F%AA%E6%9C%89BC%E4%BA%AED.ABC%E5%90%8C%E6%97%B6%E4%BA%AE%2C%E5%B9%B6%E4%B8%94)
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