Drift Speed of the Conduction Electrons

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Homework Help Overview

The discussion revolves around calculating the drift speed of conduction electrons in an aluminum wire subjected to an electric field. The problem involves concepts from electricity and material properties, particularly resistivity and current density.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • The original poster successfully addressed the first three parts of the problem but struggles with the drift speed calculation. They mention needing to find the length of the wire, indicating a potential gap in understanding how to apply the relevant equations. Other participants express curiosity about the problem and seek clarification on the symbols used in the equations.

Discussion Status

The discussion is ongoing, with participants exploring different aspects of the problem. Some have requested answers, while others are seeking to clarify the meanings of specific symbols in the equations provided. There is no explicit consensus yet on how to proceed with the drift speed calculation.

Contextual Notes

Participants are navigating the constraints of the problem, including the need for additional information such as the length of the wire, which has not been provided. The original poster's mention of needing to find the length suggests that assumptions about the wire's dimensions may be under discussion.

Ayesh
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Homework Statement



An aluminum wire with a diameter of 0.100 mm has a uniform electric field of 0.200 V/m imposed along its entire length. The temperature of the wire is 50.0 C.

a) Determine resistivity
b) Current density
c) Total current
d) Drift speed of the conduction electrons

Homework Equations



p=p0[1+ alpha (T-T0)]
A=\prodd2/4
J=I/A
n=#carriers/volume
I=nqAVd
V=EL
Volume=AL

The Attempt at a Solution



I had no difficulties finding the answers from a) to c) but at d) I can't find it.
A friend of mine told me I had to find the length first, but I tried to find with with all the formulas I have but I can't seem to get anywhere.
 
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do you have the answer??
 
we have the same question
 
What do the symbols I, n, q, A, V, d mean in the equation I=nqAVd?

ehild
 

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