Question

A copper wire of length 2m and area of cross section 1.7×10^-6has a resistance of 2×10-2ohm calcylate the resistiviry of copper

Answer 1

the resistivity of a copper wire is 1.62*10-8

Answer 2

$hey \\ \\ here \: is \: the \: answer \\ \\ as \: \: \: r \: = p \: \frac{l}{a} \\ \\ where \: r \: is \: reistance \\ p \: is \: th \: resistivity \\ l \: is \: length \\ a \: is \: area \: \\ \\ so \: \: p \: = \: r \: \frac{a}{l} \\ \\ or \: \: p \: = \: 2 \times {10}^{ - 2} \times \frac{1.7\times {10}^{ - 6} }{2} \\ \\ or \: \: p \: = \: 1.7 \times {10}^{ - 8} ohm \: meter\\ \\ thanks.$