Question

Calculate the resistance of 100 m length of wire having a uniform cross section area of 0.01 m2 and having resistivity of 50 micro-ohm-cm.

Answer 1

Answer:

5×10^-3

Explanation:

R = ρ L / A               (1)

where  

R = resistance of the conductor (ohms, Ω)

ρ = resistivity of the conductor material (ohm metre, Ω m)

L = length of conductor (m)

A = cross-sectional area of conductor (m2)

R= (5× 10^-7 ×( 100) / 0.01

 = 5×10^-3