Question

A 2.0 mm diameter wire of length 20 m has a resistance of 0.25 ?. What is the resistivity of the…

A 2.0 mm diameter wire of length 20 m has a resistance of 0.25 O. What is the resistivity of the wire?

a) 3.9 × 10-8 Om
b) 0.25 O
c) 5 × 10-7 Om
d) 16 × 10-8 Om
e) 4 × 10-7 Om

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