Question

Determine the resistance of a copper tube having internal
diameter 7 cm; thickness 5 mm and length 5 metres.
The specific resistance of the copper is 1.7x10^-6 ohm-cm.​

Answer 1

Answer:

Cross sectional area of the copper tube is: A = pi4 (d1^2 - d2^2) = pi4( 10^2 - 9^2) = 14.9 cm^2 = 14.9 * 10^-4 m^2 l = 5m ρ = 1.7 * 10^-8 Resistance