Change rho, l, A see resistance
http://www.thephysicsaviary.com/Physics/Programs/Labs/ResistanceOfWireChallengeLab/index.html
Change rho, l, A see resistance
http://www.thephysicsaviary.com/Physics/Programs/Labs/ResistanceOfWireChallengeLab/index.html
Try to get the right charges on the rods (hard)
http://www.physicsclassroom.com/Physics-Interactives/Static-Electricity/Charging
Transferring energy electrically
http://www.thephysicsaviary.com/Physics/Programs/Labs/ElectricalEquivalentOfHeatLab/index.html
Change r, rho, A, see resistance
http://www.thephysicsaviary.com/Physics/Programs/Labs/ResistanceOfWireLab/index.html
Change charges, see potential energy
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Take single reading to find internal resistance of cell
http://www.thephysicsaviary.com/Physics/Programs/Labs/InternalResistanceOfBattery/index.html
Move the slider until meter reads zero, calculate resistance
http://www.walter-fendt.de/html5/phen/wheatstonebridge_en.htm
History of electricity
See pattern of field lines
http://www.physicsclassroom.com/Physics-Interactives/Static-Electricity/Electric-Field-Lines
See forces and fields around a range of charges