The resistance of a copper wire 200 m long is 21 ω.
If its thickness (diameter) is 0.44 mm, its specific resistance is around
A. 1.2 x 10-8 ω-m
B. 1.4 x 10-8 ω-m
C. 1.6 x 10-8 ω-m
D. 1.8 x 10-8 ω-m
Show Answer
Answer: C
Share your understanding of this question with the correct explanation.