-->

Current Electricity

Question

Define the term 'conductivity' of a metallic wire. Write its SI unit.

Solution

The conductivity of a metallic wire is defined as the degree to which a specified material conduct electricity calculated as the ratio of current density in the material to the electric field which causes the flow of current,

$R = \frac{ρ l}{A} ρ = \frac{R A}{l} \frac{1}{ρ} = \frac{l}{R . A} σ = \frac{l}{R . A}$

The SI unit of conductivity is ohm^-1 metre^-1 or mho metre^-1 or siemen metre^-1

For Daily Free Study Material Join wiredfaculty

Current Electricity

Define the term 'conductivity' of a metallic wire. Write its SI unit.

Some More Questions From Current Electricity Chapter

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Phone Number

Email Address

Loaction