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Physics
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27 Nov 2019

Eighteen-gauge wire has a diameter of 1.024 mm. Calculate theresistance of 19 m of 18 gauge lead wire at 20°C.

Omega?

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Jarrod Robel
Jarrod RobelLv2
4 Feb 2019
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

5. What length of a 22 gauge American Wire Gauge copper wire isneeded to make a resistance of 500 O?

Not sure if I'm on the right track?
R= ?(L/A)

R = 500O
? = 1.77 x 10-8 Ohms at 20° C
diameter of 22 gauge american wire = .0006m

Residential building codes typically require the use of 12-gauge copper wire (diameter 0.205 cm) for wiring receptacles. Such circuits carry currents as 20.0A. If a wire of smaller diameter (with a higher gauge number) carried that much current, the wire would rise to a high temperature and cause a fire.

(a) Calculate the rate at which internal energy is produced in 1 m of 12-gauge copper wire carrying 20.0 A.

(b) What if? Repeat the calculation for a 12-gauge aluminum wire.

(c) Explain whether a 12-gauge aluminum wire would be as safe as a copper wire?

00-gauge copper wire has a diameter of 9.266 mm. Calculate the power losses in a kilometer of such wire when it carries  

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