Question

What is resistivity? Write its SI unit.​

Answer 1

Answer:

◦•●◉✿Resistivity can be defined as the resistance of a conducting material per unit length with unit area of cross section. So it SI unit will be. ρ= RA / l.✿◉●•◦

Answer 2

 $\fbox \color{black} Answer:-$

$\huge\underline\mathtt\red{Resistivity:}$

It is a measure of resistivity power of a specified material to the flow of an electric current.

$r = p \times \frac{l}{a}$

$p = \frac{ra}{l}$

$where r =  resistivity$

$a = Area \:of \:cross\: section$

$l = Length \: of \: wire$

$(p)= ohm (\frac{m {}^{2} }{m})$

$p = ohm \times meter(s.i \: unit)$

(Ωm)