Boundary
No mains, disassembly, battery experiment or observed conductivity is invited.
Complete source
Fictional reading-corner drawing labels a coil copper and shows no powered circuit. F2 links copper's electrical conduction to wiring.
Invitation
Give a source-supported wiring explanation without pretending the drawing is a test.
Next try
Explain the difference between a provider property and a feature you can actually see in the diagram.
Ordinary possible response
F2 describes copper as a good electrical conductor used for wiring; this diagram did not measure it.