如图所示,在平行金属带电极板MN电场中将电荷量为-4*10的-6次方C的点电荷从A点移到M板,电场力做负功8*10的-4次方J,把该点电荷从A点移到N板,电场力做正功为4*10的-4次方J,N板接地.则:1.A点的电
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![如图所示,在平行金属带电极板MN电场中将电荷量为-4*10的-6次方C的点电荷从A点移到M板,电场力做负功8*10的-4次方J,把该点电荷从A点移到N板,电场力做正功为4*10的-4次方J,N板接地.则:1.A点的电](/uploads/image/z/4922546-50-6.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%9C%A8%E5%B9%B3%E8%A1%8C%E9%87%91%E5%B1%9E%E5%B8%A6%E7%94%B5%E6%9E%81%E6%9D%BFMN%E7%94%B5%E5%9C%BA%E4%B8%AD%E5%B0%86%E7%94%B5%E8%8D%B7%E9%87%8F%E4%B8%BA-4%2A10%E7%9A%84-6%E6%AC%A1%E6%96%B9C%E7%9A%84%E7%82%B9%E7%94%B5%E8%8D%B7%E4%BB%8EA%E7%82%B9%E7%A7%BB%E5%88%B0M%E6%9D%BF%2C%E7%94%B5%E5%9C%BA%E5%8A%9B%E5%81%9A%E8%B4%9F%E5%8A%9F8%2A10%E7%9A%84-4%E6%AC%A1%E6%96%B9J%2C%E6%8A%8A%E8%AF%A5%E7%82%B9%E7%94%B5%E8%8D%B7%E4%BB%8EA%E7%82%B9%E7%A7%BB%E5%88%B0N%E6%9D%BF%2C%E7%94%B5%E5%9C%BA%E5%8A%9B%E5%81%9A%E6%AD%A3%E5%8A%9F%E4%B8%BA4%2A10%E7%9A%84-4%E6%AC%A1%E6%96%B9J%2CN%E6%9D%BF%E6%8E%A5%E5%9C%B0.%E5%88%99%EF%BC%9A1.A%E7%82%B9%E7%9A%84%E7%94%B5)
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