What is produced when static electricity discharges?

When static electricity discharges, several phenomena occur simultaneously, leading to the production of heat, light, and noise.

Heat is generated due to the rapid movement of charged particles during the discharge process. This movement leads to an increase in temperature, which is why you may feel warmth when you experience a static shock.

Light is also produced during a static discharge, commonly visible as a spark or flash. This occurs when the electric current of the discharge ionizes the air, which emits light as the ionized particles return to their normal state.

Noise, such as a crackling or popping sound, accompanies the discharge as well. This sound is generated by the rapid expansion of heated air resulting from the electric current passing through it.

Therefore, since all these effects occur simultaneously when static electricity discharges, the most comprehensive answer is that all of the effects—heat, light, and noise—are produced.