Multiple Choice
Use the fact that the resistance of a wire carrying an electrical current is directly proportional to its length and inversely proportional to its cross-sectional area.
A 10-foot piece of copper wire produces a resistance of 0.2 ohm.Use the constant of proportionality k = 0.000833 to find the diameter of the wire.
(Round the answer up to three decimal places. )
A) 0.23 ft
B) 0.58 ft
C) 0.38 ft
D) 0.48 ft
E) 0.73 ft
Correct Answer:

Verified
Correct Answer:
Verified
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