Calculate the drift velocity (in m/s) of electrons in a 6 gauge copper wire (which has a diameter of 4.115 mm) carrying a 22.5 A current, given that there is one free electron per copper atom. The density of copper is 8.80 103 kg/m3. (Indicate the direction with the sign of your answer.) m/s A 14-gauge copper wire has a diameter of 1.500 mm. What magnitude current flows in amperes when the drift velocity is 1.30 mm/s? (The density of free electrons in copper is 8.34 1028 e?/m3.).) A
Added by Jose Carlos J.
Close
Step 1
Given diameter, D = 4.115 mm = 0.004115 m Using the formula for the area of a circle, A = πr^2, where r = D/2 r = 0.004115/2 = 0.0020575 m A = π(0.0020575)^2 = 1.329 x 10^-5 m^2 Show more…
Show all steps
Your feedback will help us improve your experience
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Calculate the drift velocity of electrons in a copper wire with a diameter of 2.053 mm (12-gauge) carrying a 20.0-A current, given that there is one free electron per copper atom. (Household wiring often contains 12-gauge copper wire, and the maximum current allowed in such wire is usually 20.0 A.) The density of copper is 8.80 × 103 kg/m3 and the atomic mass of copper is 63.54 g/mol.
Khoobchandra A.
A copper wire is carrying a current density, J = 3.2x10^6 A/m^2. The free electron density in the copper wire is about n = 8x10^28/m^3. Calculate the drift velocity of the free electrons in the copper wire.
Adi S.
An 18 -gauge copper wire (diameter 1.02 $\mathrm{mm} )$ carries a current with a current density of $1.50 \times 10^{6} \mathrm{A} / \mathrm{m}^{2} .$ The density of free electrons for copper is $8.5 \times 10^{28}$ electrons per cubic meter. ,Calculate (a) the current in the wire and (b) the drift velocity of electrons in the wire.
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD