Question $21($Mandatory$)(1$ point$)$

A nichrome wire is $1$ m long and $1{10}^{-6}{m}^2$ in cross$-$sectional area. When connected to a potential difference of $2$ V $,$ a current of $4$ A exists in the wire. The resistivity of this nichrome is:

$8{10}^{-7}*m$

$5{10}^{-7}*m$

${10}^{-7}*m$

$2{10}^{-7}*m$

$4{10}^{-7}*m$