Log in
Physics
1
answer
0
watching
113
views
23 Nov 2019

A certain laboratory experiment requires an aluminum wire oflength of 31.0 m and a resistance of 2.60 O at 20.0°C. Whatdiameter wire must be used? (The resistivity of aluminum at 20.0°Cis 2.82 x 10-8 O · m.)

Watch
1
answer
0
watching
113
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Lelia Lubowitz
Lelia LubowitzLv2
8 Apr 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related textbook solutions

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

Related questions

A 6 m long piece of wire of density 8.34 g/m^3 has a diameter of6.239 mm. The resistivity of the wire is 1.7 × 10^−8 Ω · m at20o C. The temperature coefficient for the wire is0.0038(o C)^−1.

Calculate the resistance of the wire at 20o C.

Answer in units of Ω

Calculate the difference in the resistance of the wire between47o C and 62o C.

Answer in units of Ω

25.6You want to produce three 1.00-mm-diameter cylindri- cal wires, each with a resistance of 1.00 2 at room temperature. One wire is gold, one is copper, and one is aluminum. Refer to Table 25.1 for the resistivity values. (a) What will be the length of each wire? (b) Gold has a density of 1.93 x 104 kg/m". What will be the mass of the gold wire? If you consider the current price of gold, is this wire very expensive?

A copper wire of radius a = 0.250 mm has an aluminum jacket of outer radius b = 0.380 mm. There is a current i = 2.23 A in the composite wire. Take the resistivity of copper and aluminum to be 1.69 x 10-8 Ωm and 2.75 x 10-8 Ωm. Calculate the current (in A) in:

(a) the copper and 
(b) the aluminum.
(c) If a potential difference V = 10.6 V between the ends maintains the current, what is the length in meters of the composite wire?

Weekly leaderboard

Home
Homework Help 3,900,000
Physics 110,000
Start filling in the gaps now
Log in