Given :
Number of operations move through a pocket calculator during a full day's operation , [tex]n=1.34 \times 10^{20}[/tex] .
To Find :
How many coulombs of charge moved through it .
Solution :
We know , charge in one electron is :
[tex]e^-=-1.6\times 10^{-19}\ coulombs[/tex]
So , charge on n electron is :
[tex]C=e^-\times n\\C=-1.6\times 10^{-19}\times 1.34\times 10^{20} \ C\\C=-21.44\ C[/tex]
Therefore , -21.44 coulombs of charge is moved through it .
Hence , this is the required solution .
