Final answer:
The electrostatic series is particularly relevant for tribo-electric charging, where materials come into contact and transfer electrons, resulting in them acquiring static charges.
Step-by-step explanation:
The electrostatic series is relevant for the method of charging known as tribo-electric charging, where materials become charged through contact. This series lists materials in order of their tendency to gain or lose electrons when they come into contact with other materials. For instance, when two different materials from the electrostatic series are rubbed together, there is a transfer of electrons from one material to the other, leading to one material becoming positively charged and the other negatively charged. The process can be utilized for charging by conduction, where direct contact between materials causes transfer of charge. However, it is also important to be cautious when dealing with static electricity and potential sparks, as noted with the use of grounding for gasoline receptacles to prevent ignition. In summary, the electrostatic series is a useful tool when dealing with problems involving static electricity, allowing us to predict which materials are more likely to acquire or lose electrons and subsequently become charged.