Question

a wire is 10 metre long 0.2 mm in diameter has a resistance of 10 ohm calculate the resistivity of its material​

Answer 1

Hello mate!!

Here's your answer

Given: length=10m=1000mm ,resistance=10ohm, diameter=0.2mm ,that is area =0.125mm^2

We know that R=rho×l/A

That is rho=10×0.125/10000

Rho=0.000125