See charges on rods and can
http://www.physicsclassroom.com/Physics-Interactives/Static-Electricity/Aluminum-Can-Polarization
See charges on rods and can
http://www.physicsclassroom.com/Physics-Interactives/Static-Electricity/Aluminum-Can-Polarization
See pattern of field lines
http://physics.bu.edu/~duffy/HTML5/EField.html
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Coulomb’s Law
Coulomb’s Law
Try to get the right charges on the rods (hard)
http://www.physicsclassroom.com/Physics-Interactives/Static-Electricity/Charging
Change charges, see potential energy
Helen rates this resource as Good
History of electricity