We Can Figure This Out.org
Virtual Lab: Basic Charge Attraction &Amp; Repulsion (Pithballs)
 University of Virginia
             
 
© 2003-Present, John C. Bean
 
The key point is that although the ball and rod contain huge numbers of positive and negative charges, they start out in precise balance. That is to say, both start out "electrically neutral."
 
Last Scene
Next Scene