Q
The resistance of a copper wire 200 m long is 21 Q. If its thickness (diameter) is 0.44 mm, its specific resistance is around_______________?
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A
A. 1.2 x 10~8 q-m
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B
B. 1.4 x 10~8 q-m
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C
C. 1.6 x 10″”8 q-m
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D
D. 1.8 x 10″8 q-m
Correct Answer:
C. C. 1.6 x 10″”8 q-m
