i do google image
http://images.google.com.sg/imgres?imgurl=http://www.physics.sjsu.edu/becker/physics51/images/25_02ParallelPlateCap.JPG&imgrefurl=http://www.physics.sjsu.edu/becker/physics51/capacitors.htm&usg=__xPyyH0dxN5AaiMa6YfFqKu4-SuM=&h=441&w=290&sz=56&hl=en&start=2&um=1&tbnid=i74IerJNVsdmTM:&tbnh=127&tbnw=84&prev=/images%3Fq%3Dfringing%2Bcapacitor%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26sa%3DN%26um%3D1
from [img]http://www.physics.sjsu.edu/becker/physics51/images/Proto2_r1_c1.jpg[/img]
[img]http://www.physics.sjsu.edu/becker/physics51/images/25_02ParallelPlateCap.JPG[/img]
http://www.physics.sjsu.edu/becker/physics51/images/25_02ParallelPlateCap.JPG

(b) When the plate separa-tion is small compared to the plate area, the fringing of the electric field at the edges is negligible.