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Post Closed as "Not suitable for this site" by Norbert Schuch, AccidentalFourierTransform, Jon Custer, John Rennie, Kyle Kanos

I drew a sketch.Diagram of circuit I hope it helps. Assume pigtail is disconnected from socket, as are the wires to the lamps. My voltage drop is occurring "upriver" of where I expect it. I figured on 12v$12\,\mathrm{V}$ all the way to the lamps, then 0v$0\,\mathrm{V}$ after, with both brown and black having to keep the same reading. Looks like I don't understand this.

Thank you very much,

Tracy B.

I drew a sketch.Diagram of circuit I hope it helps. Assume pigtail is disconnected from socket, as are the wires to the lamps. My voltage drop is occurring "upriver" of where I expect it. I figured on 12v all the way to the lamps, then 0v after, with both brown and black having to keep the same reading. Looks like I don't understand this.

Thank you very much,

Tracy B.

I drew a sketch.Diagram of circuit I hope it helps. Assume pigtail is disconnected from socket, as are the wires to the lamps. My voltage drop is occurring "upriver" of where I expect it. I figured on $12\,\mathrm{V}$ all the way to the lamps, then $0\,\mathrm{V}$ after, with both brown and black having to keep the same reading. Looks like I don't understand this.

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I thought I understood voltage drop in DC circuits until this

I drew a sketch.Diagram of circuit I hope it helps. Assume pigtail is disconnected from socket, as are the wires to the lamps. My voltage drop is occurring "upriver" of where I expect it. I figured on 12v all the way to the lamps, then 0v after, with both brown and black having to keep the same reading. Looks like I don't understand this.

Thank you very much,

Tracy B.