Question

A material wire is having the length 10m and cross-section area 1 mm2

is having the resistance

20 then find the resistivity of the material of the wire?​

Answer 1

Answer:

Resistivity = 20 x $10^{-5}$ ohm

Explanation:

l = .1 m

A = $10^{-6}$ $m^{2}$

R = 20 ohm

R = δ l /A

δ = R A / l = 20 x $10^{-6}$ / .1

                = 20 x $10^{-5}$ ohm m