均匀带电球壳内：E=0
均匀带电球壳外：E=kq/R2(R二次方啦）R取球壳外点到球心的距离
均匀带电球体内：E=kqr/R3(R三次方)r取球内点到球心距离,R取球体半径
均匀带电球体外：E=E=kq/R2(R二次方啦）R取球体外点到球心的距离
楼主是搞物理竞赛的吧高斯定理很有用但不学也没事