Answer:
Net charge,[tex]Q=7.84\times 10^{-6}\ C[/tex]
Explanation:
Number of protons, [tex]n_p=9\times 10^{13}[/tex]
Number of electrons, [tex]n_e=4.1\times 10^{13}[/tex]
Charge on electron, [tex]q_e=-1.6\times 10^{-19}\ C[/tex]
Charge on proton, [tex]q_p=1.6\times 10^{-19}\ C[/tex]
Net charge acting on the substance is :
[tex]Q=n_eq_e+n_pq_p[/tex]
[tex]Q=4.1\times 10^{13}\times (-1.6\times 10^{-19})+9\times 10^{13}\times 1.6\times 10^{-19}[/tex]
[tex]Q=0.00000784\ C[/tex]
or
[tex]Q=7.84\times 10^{-6}\ C[/tex]
So, the net charge on the substance is [tex]7.84\times 10^{-6}\ C[/tex]. Hence, this is the required solution.
