Answer
$ ρ = 1.47\times10^{-8} m$
According to the table in the textbook (Table 25.1), the wire is made out of silver since silver closely matches the resistivity of the wire.
Work Step by Step
$A = \frac{π}{4}\times d^{2}$
$A = \frac{π}{4}\times (2.05\times10^{-3}m)^{2}$
$A = (3.3\times10^{-6}m^{2}$). This area represents the cross sectional area of the wire.
The resistivity of a wire is given by the following formula:
$ρ = \frac{RA}{L}$
$$ρ = \frac{0.0290 Ω\times3.3\times10^{-6}m^{2}}{6.50m}$$
$$ρ = 1.47\times10^{-8} m$$
