Solved: Copper Wire The resistance in ohms of 1000 feet of solid copper wire at can be
Chapter 0, Problem 78(choose chapter or problem)
Copper Wire The resistance y in ohms of 1000 feet of solid copper wire at \(77^{\circ} \mathrm{F}\) can be approximated by the model
\(y=\frac{10,770}{x^2}-0.37,\quad\ \ \ 5\le x\le100\)
where x is the diameter of the wire in mils (0.001 in.). Use a graphing utility to graph the model. If the diameter of the wire is doubled, the resistance is changed by about what factor?
Text Transcription:
77 degrees F
y = 10,770/x^2 - 0.37, 5 leq x leq 100
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