Answer
Charge on object A = $+1.6\times10^{-13}\text{ Coulomb}$
Charge on object B = $−3.2×10^{−13} \text{ Coulomb}$
Work Step by Step
1 million = $10^6$
2 million electrons are removed from object A and placed on object B.
Charge of 2 million electron = $2×10^6×$ charge on one electron
Charge of 2 million electron = $2×10^6×1.6021×10^{−19} \text{ Coulomb}$
Charge of 2 million electron = $3204.2×10^{−16} \text{ Coulomb}\approx 3.2\times 10^{-13}\text{ Coulomb}$
Charge on object A = $-1.6\times10^{-13}+3.2×10^{−13} = +1.6\times10^{-13}\text{ Coulomb}$
Charge on object B = $−3.2×10^{−13} \text{ Coulomb}$
