Light, in the context of classical electromagnetism, is not composed of charged particles or "deactivated charge" in the way that matter is. Light is instead an electromagnetic wave, which is a combination of oscillating electric and magnetic fields that propagate through space.
The electromagnetic wave nature of light can be understood through Maxwell's equations, which describe the behavior of electric and magnetic fields and their interactions. These equations show that oscillating electric fields give rise to oscillating magnetic fields, and vice versa, resulting in the propagation of electromagnetic waves.
In this framework, the oscillations of the electric and magnetic fields do not arise from the motion of charged particles. Rather, they arise due to the changing electric field produced by accelerating charges, such as in the case of an oscillating current in an antenna or the vibration of charged particles in atoms. The electric and magnetic fields associated with light are self-sustaining and can propagate through vacuum without the need for charged particles to carry them.
Therefore, it is important to distinguish between light as an electromagnetic wave and charged particles. Light does not consist of deactivated charge or individual charged particles. Instead, it is a phenomenon resulting from the interactions of electric and magnetic fields, governed by the laws of electromagnetism.