A given wire of resistance 10ohms has a length of 5m and a cross sectional area of four multiple by ten raise to power minus three meter square.Calculate the conductivity of the…

Question

asked Aug 9, 2021 218k views

1 Answer

Rovaughn · Answer 1 · 2021-08-14T01:11:12+0000

Answer:

$\sigma = 125 siemens/m$

Step-by-step explanation:

Resistance, R = 10 ohms

Length, l = 5 m

Cross Sectional Area, A = 4 x 10⁻³ m²

Resistivity,
$\rho = (RA)/(l)$

$\rho = (10 * 4 * 10^(-3))/(5) \\\rho = 0.008 \Omega -m$

Conductivity = 1/Resistivity, i.e
$\sigma = 1/ \rho$

$\sigma = 1/0.008\\\sigma = 125 siemens/m$