Answer :
Answer : The total electric charge of electrons is, [tex]-4.4\times 10^{11}C[/tex]
Explanation:
Answer : The number of electrons transferred are, [tex]4.68\times 10^{20}[/tex]
Explanation :
First we have to calculate the number of electrons.
Number of electrons = [tex]\frac{\text{Total mass of electrons}}{\text{Mass of one electron}}[/tex]
Mass of 1 electron = [tex]9.1\times 10^{-31}kg[/tex]
Total mass of electron = 2.5 kg
Number of electrons = [tex]\frac{2.5kg}{9.1\times 10^{-31}kg}[/tex]
Number of electrons = [tex]2.75\times 10^{30}[/tex]
Now we have to calculate the total electric charge of electrons.
Formula used :
[tex]Q=ne\\\\n=\frac{Q}{e}[/tex]
where,
n = number of electrons transferred = [tex]2.75\times 10^{30}[/tex]
Q = charge on electrons = ?
e = charge on 1 electron = [tex]-1.602\times 10^{-19}C[/tex]
Now put all the given values in the above formula, we get:
[tex]2.75\times 10^{30}=\frac{Q}{-1.602\times 10^{-19}C}[/tex]
[tex]Q=-4.4\times 10^{11}C[/tex]
Thus, the total electric charge of electrons is, [tex]-4.4\times 10^{11}C[/tex]