Question

6) A wire is 1m long, 0.22mm diameter and of resistance 10 ohm. calculate the resistivity​

Answer 1

Answer:

the resistivity of the conductor is 3.799× 10^-7 ohm- m

Explanation:

here , it is Given that:

l=1m ,d=0.22mm=>r=0.11mm and R=10 ohm

by using the formula,

R= p౹/ A

= p౹/ πr²

therefore, p= Rπr²/l

= 10× 3.14×( 0.11× 10 -³)²

= 10× 3.14× 0.11×0.11× 10^ -6

= 0.3799× 10^-6

= 3.799× 10^-7 ohm- m

hence, the resistivity of the conductor is 3.799× 10^-7 ohm- m