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Determine the Length of a Copper Wire That Has a Resistance

Question 99

Multiple Choice

Determine the length of a copper wire that has a resistance of 0.172 Ω\varOmega and cross-sectional area of 7.85 × 10-5 m2. The resistivity of copper is 1.72 × 10-8 Ω\varOmega . m.


A) 873 m
B) 250 m
C) 78.5 m
D) 785 m
E) 6570 m

Correct Answer:

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