Review some discussion on electric field on the surface of evenly charged spherical shell within 20 years , sum marize and analyze three com mon solutions to ensure correct answer to this problem .%综述近20年来大学物理教学中，关于均匀带电球壳表面电场强度的讨论，概括出3种常见的解法，探讨了不同解法所得不同结果的本质，确定均匀带电球壳表面电场强度的最佳算法。
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