Answer:
The resistance is 0.02484 Ω
Explanation:
we have the following data:
L = length = 4.2 m
D = diameter = 1.9 mm = 0.0019 m
p = the resistivity of copper = 1.68x10^-8 Ω*m
we calculate the area:
A = pi*r^2 = pi*(0.0019 m/2)^2 = 2.84x10^-6 m
resistance is given by:
R = (p*L)/A = ((1.68x10^-8 Ω*m)*(4.2))/2.84x10^-6 m = 0.02484 Ω
