# How does static electricity change the charges of an object?

when we rub a material with another material the electrons from the material transfers to the another material. The transfer of the elements is always in a quantised way. Which means electrons can only be transferred in a way of $Q = n e$ where e is charge of electron and n= $\pm 1 , \pm 2 , \pm 3 , \pm 4. \ldots$ not in fractional way. Thus due to the accumulation of charge there is static electricity. Hence that's the reason.