Question

What is meant by resistivity and conductivity of a substance?derive the relation.​

Answer 1

Answer:

$Resistivity\:is\:a\:measure\:of\:the\:resistance\\to\:the\:flow\:of\:electrons.\:Think\:of\:a\:pipe\\and\:water,the\:bigger\:the\:pipe,the\\easier\:water\:can\:flow\:and\:thus\:the\\lower\:the\:resistance.\:Conductivity\:is\\ just\:the\:inverse\:of\:resistivity,$

σ = 1/ρ

$where,$

σ $is\:conductivity\:and\: ρ \: is\:resistivity.$