- #1
panda-monium
- 6
- 0
The question is:
What current is flowing in a metal wire if 3.0*10^18 electrons pass a given point in a time of 0,10s?
I know that 1 electron has a charge of 1.60*10^-19
I also know that one coulomb is 6.24*10^18
Lastly I know to find current I need to use the formula Q=I*t, but change it to I=Q/t (I= current in Amps, Q= # of electrons or quantity of charge in coulombs, and t= time.
I attempted the solution and this is what I got:
In order to find the current I first need to figure out the quantity of charge (Q).
Q=the number of electrons.
So I multiplied the charge of one electron by the number of electrons in the circuit.
(1.60*10^-19)*(6.24*10^18)= 0.00048 C
Q= 0.00048 C
Now I used the formula I=Q/t
0.00048/10=0.000048.
I= 0.000048 A
Therefore the current in the circuit is 0.000048 A.
All I wanted to know is if I did it correctly and if I did it incorrectly how I could solve it.
Thank you so much in advance :)
Panda-Monium
What current is flowing in a metal wire if 3.0*10^18 electrons pass a given point in a time of 0,10s?
I know that 1 electron has a charge of 1.60*10^-19
I also know that one coulomb is 6.24*10^18
Lastly I know to find current I need to use the formula Q=I*t, but change it to I=Q/t (I= current in Amps, Q= # of electrons or quantity of charge in coulombs, and t= time.
I attempted the solution and this is what I got:
In order to find the current I first need to figure out the quantity of charge (Q).
Q=the number of electrons.
So I multiplied the charge of one electron by the number of electrons in the circuit.
(1.60*10^-19)*(6.24*10^18)= 0.00048 C
Q= 0.00048 C
Now I used the formula I=Q/t
0.00048/10=0.000048.
I= 0.000048 A
Therefore the current in the circuit is 0.000048 A.
All I wanted to know is if I did it correctly and if I did it incorrectly how I could solve it.
Thank you so much in advance :)
Panda-Monium