Read (from) chapters 26 & 27. In Ch 26 focus on the parts about the Biot Savart relations, Amperes Law, and using Amperes Law (453). These are all about magnetic fields and how they come from current flow in wires. We will be very interested in that! (Magnetic field from current flow in wires.)
Also of primary interest to us is the observation that: changing magnetic fields lead to electric fields! (as discussed in the post above and in Ch 27.) This relationship will be critical to everything we do from now on.
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