带有等量异号电荷,相距10cm的平行板A和B之间有一个匀强电场(如图),电场强度E=2×10^4v/m,方向向下.电场中C点距B板3cm,D点距A板2cm.<1>C、D两点哪点电势高?两点的电势差Vcd等于多少?<2>如果
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![带有等量异号电荷,相距10cm的平行板A和B之间有一个匀强电场(如图),电场强度E=2×10^4v/m,方向向下.电场中C点距B板3cm,D点距A板2cm.<1>C、D两点哪点电势高?两点的电势差Vcd等于多少?<2>如果](/uploads/image/z/9910555-43-5.jpg?t=%E5%B8%A6%E6%9C%89%E7%AD%89%E9%87%8F%E5%BC%82%E5%8F%B7%E7%94%B5%E8%8D%B7%2C%E7%9B%B8%E8%B7%9D10cm%E7%9A%84%E5%B9%B3%E8%A1%8C%E6%9D%BFA%E5%92%8CB%E4%B9%8B%E9%97%B4%E6%9C%89%E4%B8%80%E4%B8%AA%E5%8C%80%E5%BC%BA%E7%94%B5%E5%9C%BA%28%E5%A6%82%E5%9B%BE%29%2C%E7%94%B5%E5%9C%BA%E5%BC%BA%E5%BA%A6E%3D2%C3%9710%5E4v%2Fm%2C%E6%96%B9%E5%90%91%E5%90%91%E4%B8%8B.%E7%94%B5%E5%9C%BA%E4%B8%ADC%E7%82%B9%E8%B7%9DB%E6%9D%BF3cm%2CD%E7%82%B9%E8%B7%9DA%E6%9D%BF2cm.%26lt%3B1%26gt%3BC%E3%80%81D%E4%B8%A4%E7%82%B9%E5%93%AA%E7%82%B9%E7%94%B5%E5%8A%BF%E9%AB%98%3F%E4%B8%A4%E7%82%B9%E7%9A%84%E7%94%B5%E5%8A%BF%E5%B7%AEVcd%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91%3F%26lt%3B2%26gt%3B%E5%A6%82%E6%9E%9C)
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