半径为R的带电圆盘,其任意一点的电荷密度为σ= σ0(1-r/R),式中σ0为常量,r为圆盘上任意一点到圆心的距离,求圆盘轴线上与圆心距离|x|场强大小.
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![半径为R的带电圆盘,其任意一点的电荷密度为σ= σ0(1-r/R),式中σ0为常量,r为圆盘上任意一点到圆心的距离,求圆盘轴线上与圆心距离|x|场强大小.](/uploads/image/z/1481624-8-4.jpg?t=%E5%8D%8A%E5%BE%84%E4%B8%BAR%E7%9A%84%E5%B8%A6%E7%94%B5%E5%9C%86%E7%9B%98%2C%E5%85%B6%E4%BB%BB%E6%84%8F%E4%B8%80%E7%82%B9%E7%9A%84%E7%94%B5%E8%8D%B7%E5%AF%86%E5%BA%A6%E4%B8%BA%CF%83%3D+%CF%830%EF%BC%881-r%2FR%EF%BC%89%2C%E5%BC%8F%E4%B8%AD%CF%830%E4%B8%BA%E5%B8%B8%E9%87%8F%2Cr%E4%B8%BA%E5%9C%86%E7%9B%98%E4%B8%8A%E4%BB%BB%E6%84%8F%E4%B8%80%E7%82%B9%E5%88%B0%E5%9C%86%E5%BF%83%E7%9A%84%E8%B7%9D%E7%A6%BB%2C%E6%B1%82%E5%9C%86%E7%9B%98%E8%BD%B4%E7%BA%BF%E4%B8%8A%E4%B8%8E%E5%9C%86%E5%BF%83%E8%B7%9D%E7%A6%BB%7Cx%7C%E5%9C%BA%E5%BC%BA%E5%A4%A7%E5%B0%8F.)
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