Question

Calculate the resistivity of a wire of length of 2m and cross sectional area of 0.004cm square,if its resistance is 3ohms

Answer 1

Answer:

6×10^-5

Explanation:

resistivity = RA/L

R= 3 ohm

A= 0.004= 4×10^-5

L=2m

Answer 2

Answer:

R= resistivity×length/area

resistivity=3×0.004×10^-4 /2 ,,... resistivity is 6×10^-7 ohm .m