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/sci/ - Science & Math

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>> No.9669691 [View]
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9669691

>>9656198
mech e here

i want to know about current and magnetism in complicated metal structures. looking at a circuit diagram is one thing.. those are much simplier, but why doesn't current flow through an entire structure?

i can understand wires, they're just an insulated strand/strands of wire. but what about pcbs and other electronics/signal carrying devices? how can some of them be made of metal but still carry a distinguishable signal? hopefully this makes sense.

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