Quantization of charge is a fundamental principle in physics that describes the fact that electric charge is always observed in discrete, quantized amounts. This means that the charge of any object or system can only take on certain specific values, which are always integer multiples of a fundamental unit of charge.

The fundamental unit of charge is 1.602 x 10^-19 Coulombs (C) which is the magnitude of charge carried by a single electron, which has a negative charge of -1.602 x 10^-19 Coulombs (C). According to the principle of quantization of charge, the total charge of any object or system must always be a multiple of this fundamental unit.

For example, if an object has a net charge of -3.2 x 10^-19 C, then we know that it must be composed of two excess electrons, since -3.2 x 10^-19 C is equal to -2 times the fundamental unit of charge. Similarly, an object with a net charge of +4.8 x 10^-19 C must be composed of three fewer electrons, since +4.8 x 10^-19 C is equal to +3 times the fundamental unit of charge.

The principle of quantization of charge is a consequence of the fact that electric charge is a fundamental property of matter, and that it can only exist in discrete, quantized amounts. This principle has important implications for our understanding of the behavior of charged particles and the nature of electromagnetic interactions.