A 20-M-Long Piece of Wire Has a Diameter of 2 $\Omega$

Multiple Choice

A 2.0-m-long piece of wire has a diameter of 2.0 mm and a resistance of 0.018 $\Omega$ . The resistivity of the material is

A) $2.8 \times 10 ^ { - 8 } \Omega \cdot \mathrm { m } .$
B) $1.3 \times 10 ^ { - 7 } \Omega \cdot \mathrm { m } .$
C) $1.4 \times 10 ^ { - 8 } \Omega \mathrm { m } .$
D) $1.3 \times 10 ^ { 4 } \Omega \cdot \mathrm { m }$