Multiple Choice
The resistance y in ohms of 1000 feet of solid metal wire at can be approximated by the model
,
where
is the diameter of the wire in mils (0.001 in) . If the diameter of the wire is doubled, the resistance is changed by approximately what factor? In determining your answer, you can ignore the constant -0.38.
A) 5
B)
C) 4
D)
E)
Correct Answer:

Verified
Correct Answer:
Verified
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