Finding electron flow when charge passes through a wire

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hshphyss
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Can anyone help me with this question? Thank-you

A net charge of 51 mC passes through the cross-sectional area of a wire in 10.0 s. What is the current in the wire? How many electrons pass the cross-sectional area in 1.0 min?

I know that the current is .0051, but I'm having trouble finding the electrons. I know an amp is a coulomb per second, am I going to use C=6.3e18 somewhere? I tried 6.3e18/60 sec but that was wrong
 

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Hint: The charge on an electron is 1.6e-19 C. (6.25e18 is the number of electrons required to make one Coulomb of charge.) Start by figuring out how much charge (in Coulombs) passes in 1.0 min.
 
would i multiply 1.6e-19 C x 60 seconds? I have to use seconds correct?
 
No. You found the current (0.0051 A) so use it. Current = charge/time; you have the current and the time: solve for the charge. Then figure out how many electrons equal that charge.
 
I get 1.36e-5 for the charge. So is it going to be 1.36e-5/1.6e-19?
 
How did you get that value for the charge? (Once you get the correct charge, yes, divide it by the electron charge to find the number of electrons.)
 
i divided the current by 60 seconds... .0051/60 then i multiplied it by 1.6e-19 and i got 8.5e-5, but that is wrong what did i do?
 
Current = Charge/Time, or...

Charge = Current x Time.

(If you keep track of your units, you'll make fewer mistakes.)
 
yes... so its going to be current/time=charge and i got 8.5e-5 then i multiplied it by the charge on an electron 8.5e-5 x 1.6e-19 and I got 1.36e-23. Where am i going wrong?
 
hshphyss said:
yes... so its going to be current/time=charge
Nope. Reread what I wrote above.
 
my apologies after i multiplied current x time i got 0.306, and then I divide by 1.6e-19? I want to make sure I get this right becausr I am running out my submissions, thank-you for ur time
 
Correct. But always attach units to your answers. When you multiplied current by time you got charge, so that answer was 0.306 C. And you will divide by 1.6e-19 C per electron. Your final answer will be just a number (of electrons).