Answer:
[tex]Q_A=80 nC[/tex],[tex]Q_B=80 nC[/tex],
Explanation:
Knowing both spheres are identical means after the equilibrium both will have equal charge so added [tex]1.0x10^{12} e[/tex]
So to determine the charge of both spheres can use
[tex]Q_A=Q_B[/tex]
[tex]Q=1.6x10^{-19}C[/tex]
[tex]Q_A=Q_B=Q_{total}[/tex]
[tex]Q_{total}= - 1.0x10^{12}C * - 1.6x10^{-19}C[/tex]
[tex]Q_{total}=1.6x10^{-7}C[/tex]
Both spheres are identical so
[tex]Q_A=Q_B=\frac{Q_{total}}{2}[/tex]
[tex]Q_A=Q_B=\frac{1.6x10^{-7}}{2}=80x10^{-9}C[/tex]
