Question

a conductor of 120 m having 2 mm thickness with a resistance of 28 ohm.find the resistivity?​

Answer 1

Answer:

7.6×10^-7 ohm meter

Explanation:

first we find area of wire thickness for which we convert radius from mm to m . after finding we put value into resistivity = ( resistance× area ) ÷ length of the conductor . after calculation we get 7.6 × 10^ -7 ohm meter