Question

A wire is 20 cm long and has a cross section of 1 cm^2
. If its resistance is 40 ohm, what

will be its resistivity?
​

Answer 1

L=20cm

A=1 cm²

R=40 ohm

R= resistivity ×l/A

Resistivity =R×A/l

Resistivity=40/20=2

I hope this helps ( ╹▽╹ )