Question

Determine the resistance of a copper tube 0.5 cm and 2 m long. The external diameter and resistivity is 10 cm and 9.071349x10-2 Ω-m respectively.

Answer 1

Answer:

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Answer 2

Answer:

Cross sectional area of the copper tube is:

A=

4

π

(d

1

2

−d

2

2

)=

4

π

(10

2

−9

2

)=14.9cm

2

=14.9∗10

−4

m

2

l=5m

ρ=1.7∗10

−8

Resistance is given by: R=

A

ρl

=5.6∗10

−5

Ohm

Explanation:

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