A 0.20-m-long metal rod has a radius of 1.0 cm and a resistance of 3.2 x 10-5 W.What is the resistivity of the metal?
A) 1.6 x 10-8 W*m
B) 5.0 x 10-8 W*m
C) 16 x 10-8 W*m
D) 160 x 10-8 W*m
Correct Answer:
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