Multiple Choice
A 2.0 mm diameter wire of length 20 m has a resistance of 0.25 Ω. What is the resistivity of the wire?
A) 5 × 10-7 Ωm
B) 3.9 × 10-8 Ωm
C) 4 × 10-7 Ωm
D) 16 × 10-8 Ωm
E) 0.25 Ω
Correct Answer:
Verified
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