Basic circuit simulations for newbees

I didn't make these programs but I use them in my college physics classes. Maybe for someone that has not got enough background in circuits, these programs can be useful. Here is a link:

http://phet.colorado.edu/en/simulations/category/physics/electricity-magnets-and-circuits

PHET is supported by a few sources include the National Science Foundation and has a number of good simulations for math and science.

I will be adding some tutorials on simple circuits with these demonstrations to my blog (liudr.wordpress.com).

I especially like the circuit construction kit. http://phet.colorado.edu/en/simulation/circuit-construction-kit-dc

They even took the time to make the resistor color code work!

I can't let this stand unanswered any longer! Awesome link, thanks!

I like the "electric field of dreams". Among others, I'm sure - I haven't tried them all (yet?). I actually made something similar in Dark Basic a while back, but not animated (other than dragging the charges around with the mouse pointer), so this was more fun :)