A copper wire contains 3.0 *10 ^ 22 number of charges on 1 meter wire

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Homework Help Overview

The discussion revolves around a problem involving a copper wire that contains a specific number of charges per meter and seeks to determine the speed of electrons when a current is applied. The subject area includes concepts from electricity and charge flow in conductive materials.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants explore the relationship between current, charge, and electron speed. There are attempts to clarify the original question and to derive the charge that moves through the wire based on given parameters.

Discussion Status

The discussion is ongoing, with participants providing guidance and prompting further exploration of the problem. Some participants have pointed out potential errors in calculations and have encouraged a deeper understanding of the relationships between current, charge, and electron velocity.

Contextual Notes

There are indications of confusion regarding the definitions of current and charge, as well as some numerical discrepancies in the calculations presented. Participants are working within the constraints of the problem as posed in the exercise.

amizy9990
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Homework Statement
A copper wire contains 3.0 *10 ^ 22 number of charges on 1 meter wire. What speed do the electrons move
Relevant Equations
t=Q/I
A copper wire contains 3.0 *10 ^ 22 number of charges on 1 meter wire. What speed do the electrons move when there is 2 A current in the wire.

t=q/t=3,20*10^3 C/ 2.0 A = 1,5*10^22 s

v= 1m/1,5*10^3s= 6,6*10^-4 m/s
 
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Hello @amizy9990 ,
:welcome: !​

What is your question ?
 
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this is the question: A copper wire contains 3.0 *10 ^ 22 number of charges on 1 meter wire. What speed do the electrons move when there is 2 A current in the wire.
 
No, that is the question the exercise asks of you.
What is your question to PF ?
 
Let me help you to get going: (*)
Suppose the electrons have a speed of v m/s.
In that case, what would be the charge that leaves the wire every second ?

##\ ##

(*) the idea is that PF helps you to complete the exercise, not that PF does the exercise for you -- that would not help you at all.

##\ ##
 
the charge is I=2,0A
 
No. 2A is not a charge.
I asked: how much charge leaves (goes through) the wire every second IF the speed is 1 m/s ?

That would be a charge of 3 10^22 electrons. How many Coulombs is that?

##\ ##
 
amizy9990 said:
t=q/t=3,20*10^3 C/ 2.0 A = 1,5*10^22 s

v= 1m/1,5*10^3s= 6,6*10^-4 m/s
Basically right, but some confusing typos and numerical errors.
q/t should be q/I
3,2 should be 4,8
If it were 3,2, 1,5 should be 1,6.
10^22 should be 10^3.
 
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thanks
 
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