Given, charge of one electron (e) = 1.6 x 10⁻¹⁹c

Number of electrons (n) = 1.5 x 10⁷

Charge (Q) = ?

We know that:-

Charge (Q) = ne = 1.5 x 10⁷ x 1.6 x 10⁻¹⁹

= 2.4 x 10⁻¹²c.

Charge of one electron is -1.602 x 10^(-19) coulombs, so the charge of 1.5 x 10^7 electrons is -2.403 x 10^(-12) coulombs; the charge on an object that LOSES that many electrons will be

+2.403 x 10^(-12) coulombs.