Suppose Instead of Using a 12-Gauge (Diameter = 2 $\rho$ (Cu)= 17

Multiple Choice

Suppose instead of using a 12-gauge (diameter = 2.05 mm) solid copper cable you made a hollow copper cable of outer diameter 2.59 mm (10-gauge) and inner diameter 1.29 mm (16-gauge) .Calculate the length of hollow cable that would give the same resistance as 1 m of 12-gauge solid cable.Use $\rho$ (Cu) = 1.7 $\times$ 10^-8 $\Omega$ /m.

A) 0.402 m
B) 2.48 m
C) 0.833 m
D) 1.44 m
E) 1.20 m