Physics Classroom
The Physics Classroom: Electrostatics: Lesson 4: Electric Field Intensity
A lesson enhancing students understanding of electrostatics. Recognize electric fields and know the strengths they can have. Identify the formula to determine the strength of those fields. Check out the interactive featured in the...
Wikimedia
Wikipedia: Electrical Conductivity
This is the encyclopedic entry for electrical conductivity from Wikipedia.com. The site provides a brief introduction to the topic but provides numerous links to information relative to the topic.