An ion is placed in the region between the plates of a parallel-plate capacitor. The voltage between the plates is 250 V, and the plates are separated by a distance of 5 cm. If the resulting electrostatic force on the ion is 2.4 X 10'15 N away from the negative plate, then what is the charge on this ion (in terms of the elementary charge, 8) ? 0 3e 0 4e 0 +46 0 2e 0 5e 0 +5e Q +2e Q +3e