Question

how to calculate resistivity

Answer 1

R = pl\A

Where,

R = resistance

p= Resistivity

l = length of wire

A = area of cross section of wire.

p = R*A\l

Answer 2

$\bf{\underline{\underline \green{AnswEr:-}}}$

The resistance of a given material is proportional to the length, but inversely proportional to the cross-sectional area. Thus resistivity can be expressed using the SI unit "ohm metre" (Ω⋅m) — i.e. ohms divided by metres (for the length) and then multiplied by square metres (for the cross-sectional area).