Examples of Electric Field Lines

[AznBoi]

Does anyone know a good site where they show you examples of how to draw Electic Field lines?

Problem relating to it:
a) sketch the electirc field pattern set up by a positively charged hollow sphere.

 

[AznBoi]

bump, really need some help. I've tried googling but in vain. How can I post my pictures on here? Do I use paint and then upload it to imageshack?

 

[ranger]

I think no one replied because you have no picture (attempt). What you could do is like you said, draw it in paint then upload it to imageshack or to PF as an attachment.

 

[AznBoi]

Alright, I've never used imageshack before lol so I'm going to try it. =]

 

[AznBoi]

Here's my drawing for part a). I think I drew the outside lines correct but I'm totally unsure of how to draw the inside ones.

http://img251.imageshack.us/img251/5251/chargedpositivemg9.th.png

 

[AznBoi]

Here's a drawing for part b) A conducting cube is given a positive charge. Sketch the electric field pattern both inside and outside the cube.

http://img300.imageshack.us/img300/8380/conductingcuberd5.th.png

http://img267.imageshack.us/img267/3813/conductingcube2dnq1.th.png

Should I draw my pictures in 2d or 3d?? Can someone please tell me if I'm drawing the lines correctly? I have no idea whatsoever of how to draw the inside electric field lines. Thanks!