Electricity theory

spherical case

see attached file... simple derivation

do u understood it ?

see attached

For example we will consider a parallel plate capacitor C = \frac{\varepsilon A}{d} thus , Capacity of a cacpacitor is inversly proportional to the separation d , so if ...

while third one is liner so field lines woluld be linear

while in figure one it has no perticular shape so perpendicular to every surface means filed line may be like that.

dear for circular or symmetrical it will outword towards the surgace and always perpendicular to the surface means in circle it follows by radius so it would be in radial direction