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

AI Thread Summary
A copper wire with 3.0 * 10^22 charges per meter has an electron speed of 6.6 * 10^-4 m/s when a 2 A current flows through it. The calculation involves determining the charge that leaves the wire every second, using the relationship I = q/t. The forum participants clarify that 2 A represents current, not charge, and correct numerical errors in the initial calculations. The discussion emphasizes understanding the relationship between current, charge, and electron speed in conductive materials. Accurate calculations are essential for solving such physics problems effectively.
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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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