For that same separation assuming that those charges are on masses of 1 gm each, what is the approximate gravitational attraction between them?  Take the separation where you found an electrostatic attraction of 1200 N for charges of +8 and -8 microcoulombs and calculate the gravitational force between to masses of 1 gm (0.001 kg).     10-9 N     10-11 N     The same as the electrical attaction.     10-13 N

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.