HW - electric fields (for Thurs/Fri)

Draw electric fields for each of the following:

a.  big hunk of negative charge
b.  big hunk of positive charge
c.  negative charge and positive charge separated by a short distance
d.  positive charge and identical positive charge separated by a short distance
e.  negative charge and identical negative charge separated by a short distance

Play around with this.  It should run on most machines:

http://phet.colorado.edu/en/simulation/charges-and-fields

Place charges on the screen and click "show E-field" and "direction only".

Start simple and go crazy.

If your computer will allow, these are great:

http://www.falstad.com/emstatic/

http://www.falstad.com/vector3de/