物理学 5-4电场强度通量高斯定理 第五版 ◆均匀电场,E与平面夹角0 Uniform electric field, E with plane included anglee gp= escos e =E·S ◆非匀强电场,曲面S eds Non-uniform electric field, surface s E dS=dS.ad=E·dS n ④=d④ Ecos eds 第五章静电场 9/45第五章 静电场 物理学 第五版 5-4 电场强度通量 高斯定理 9/45 Φe = ES cos 均匀电场,E与平面夹角θ Φ E S   =  e Uniform electric field, E with plane included angleθ E S   n e   非匀强电场，曲面 S Non-uniform electric field, surface S E  S  d E   n e  n dS dS e   =  Φ E S   d e = d   = = s Φe dΦe EcosdS  =  s Φ E S   e d