Question

The resistance of a conductor 1 m m squared in cross-section and 20 m long is 0.346 Ω. Determine the specific resistance of the conducting material.

Answer 1

Step-by-step explanation:

R = rho l / a

rho = R a / l

= 0.346 * 20 / 1

= 0.0173

Answer 2

A=1*10^-6m^2

l=20m

R=0.346ohm

resistivity=R*A/l

resistivity=.0173*10^-6ohm/m