We will be leaving electric forces and electric potentials on the atomic scale for awhile as we start applying electric fields to materials like metals and semiconductors. That should be interesting. Here's what we need to know about metals and their properties, which can be explained by the metallic bond model for metals: Tomorrow we will apply electric fields to metal, and we will expect the electrons to behave accordingly! Check out the Chapter 18 web page for a simulation that will illustrate what's going on, at least in a general way.
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