高中电学问题如图,开关S1,S2,S3,S4均闭合,C是极板水平放置的平行板电容器,板间悬浮着一油滴P,问断开哪个开关P会向下运动对错的答案能给个解释
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![高中电学问题如图,开关S1,S2,S3,S4均闭合,C是极板水平放置的平行板电容器,板间悬浮着一油滴P,问断开哪个开关P会向下运动对错的答案能给个解释](/uploads/image/z/8354563-43-3.jpg?t=%E9%AB%98%E4%B8%AD%E7%94%B5%E5%AD%A6%E9%97%AE%E9%A2%98%E5%A6%82%E5%9B%BE%2C%E5%BC%80%E5%85%B3S1%2CS2%2CS3%2CS4%E5%9D%87%E9%97%AD%E5%90%88%2CC%E6%98%AF%E6%9E%81%E6%9D%BF%E6%B0%B4%E5%B9%B3%E6%94%BE%E7%BD%AE%E7%9A%84%E5%B9%B3%E8%A1%8C%E6%9D%BF%E7%94%B5%E5%AE%B9%E5%99%A8%2C%E6%9D%BF%E9%97%B4%E6%82%AC%E6%B5%AE%E7%9D%80%E4%B8%80%E6%B2%B9%E6%BB%B4P%2C%E9%97%AE%E6%96%AD%E5%BC%80%E5%93%AA%E4%B8%AA%E5%BC%80%E5%85%B3P%E4%BC%9A%E5%90%91%E4%B8%8B%E8%BF%90%E5%8A%A8%E5%AF%B9%E9%94%99%E7%9A%84%E7%AD%94%E6%A1%88%E8%83%BD%E7%BB%99%E4%B8%AA%E8%A7%A3%E9%87%8A)
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