| This is the beginning. Use this applet* to move a test charge about to see how the force on it can be described by an arrow pointing in the direction of the force. As you move the test charge around note how the direction and the magnitude of the arrow changes. As you place electrons around the charges ask yourself "How might I describe the force without knowing the magnitude of the 'test charge'?"
*Note that this applet contains a mistake. The test charges have a (-) charge. They are supposed to be (+).
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This is one of the coolest applets for visuallizing Electric Fields that I know. There is alot of information in this applet. It can describe geometries beyond anything we covered in class so start small and then build to more complicated stuff later. Star with the second menu set to Display: Field Vectors
When you have a sense of the field and you are ready to move on consider the next box.
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