Question

A wire of length 3 m and area of cross-section 1.7 × 10-6 m2 has a resistance 3 × 10-2 ohm.

a. What is the formula for resistivity of the wire and what is the unit of it

b. Calculate the resistivity of the wire
Solution​

Answer 1

❤Hola Mate Here Is Your Answer❤

a. Resistivity of the wire is given by

ρ=RA/L

And It unit is Ohm-m

b. In this case

L=3 m

A

=1.7×10^−6 m^2

R=3×10^−2 ohm

So

ρ=1.7×10^8 Ohm-m

Hope This Will Help U✌

Answer 2

Explanation:

Answer refer in Attachment

Thank you