#) Properties Of Electric Charge:
+> There are two kinds of charges in nature: positive and negative.
+> Like charges repel one another and unlike charges attract one
+> The force between charges varies as the inverse square of their separations.
+> Net charge is conserved. If one body gains some amount of negative charge, the other body must gain an equal amount of positive charge.
Charge is quantized. q = Ne
q: charge N: integer
e: elementary charge = 1.602