Final answer:
The purpose of an electrode in a high-pressure gun burner is to carry the spark to the point of ignition.
Step-by-step explanation:
The purpose of an electrode in a high-pressure gun burner is to carry the spark to the point of ignition.
When the burner is ignited, the electrode creates a spark that ignites the fuel-air mixture, initiating combustion.
This is different from low-pressure gun burners, which may use a different ignition method.