The Resistivity of Copper at 20ºC Is 1 $\times$ 10^-8 $\Omega$ · MYou Have Copper Wire Whose Diameter Is 2

Multiple Choice

The resistivity of copper at 20ºC is 1.7 $\times$ 10^-8 $\Omega$ · m.You have copper wire whose diameter is 2.00 mm and need a resistance of 1.00 $\Omega$ .How long would a piece of this wire need to be to provide this resistance?

A) 19.6 m
B) 49.1 m
C) 185 m
D) 317 m
E) 542 m