Determine the resistance of metal tube in term of the external diameter D, the internal diameter d , the length l and the resistivity. Calculate the resistance of a copper tube 0.5cm thick and 2m long. The external diameter is 10cm

Mauricio Mathis 2022-07-20 Answered
Determine the resistance of metal tube in term of the external diameter D, the internal diameter d , the length l and the resistivity. Calculate the resistance of a copper tube 0.5cm thick and 2m long. The external diameter is 10cm
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Answers (1)

Ragazzonibw
Answered 2022-07-21 Author has 15 answers
Given:
The external diameter of tube D = 10 cm. = 0.1 m.
The thickness of the tube t = 0.5 cm = 0.005 m.
The length of the tube l = 2 m.
The resistivity of copper ρ = 1.68   o h m   m
The cross section area of tube will be,
A = π D 2 + π ( D t ) 2 A = π × ( 0.1 ) 2 + π × ( 0.1 0.005 ) 2 A = 0.05977   m 2
The resistance of the metal tube will be,
R = ρ l A R = 1.68 × 20.05977 R = 56.215 Ω
Answer:
The resistance of the tube is = 56.215 Ω
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