Electrostatic Discharge (ESD) is best described as:

Electrostatic Discharge (ESD) is best described as:

• A. Transfer of electrostatic charge between objects at different potentials; prevent with grounding, anti-static materials, and PPE
• B. A magnetic interference requiring shielding
• C. A type of radiation requiring shielding
• D. A pressure change requiring venting

Answer: (A)

ESD is the rapid transfer of static electric charge between objects at different electrical potentials. That sudden movement of charge can discharge into nearby electronics, potentially damaging sensitive avionics components or causing circuit upset. The best way to prevent ESD is to keep everything at the same potential or safely drain charges: use grounding paths, employ anti-static (ESD-safe) materials, and wear protective gear like wrist straps and proper PPE. In practice, aviation environments use grounded workstations, ESD mats, and specially packaged components to minimize charge buildup and protect hardware. The other descriptions don’t fit ESD: magnetic interference involves magnetic fields and shielding, not static charge transfer; radiation and shielding relate to ionizing or non-ionizing radiation, not electrostatic discharge; and a pressure change with venting is unrelated to static electricity phenomena.

ESD is the rapid transfer of static electric charge between objects at different electrical potentials. That sudden movement of charge can discharge into nearby electronics, potentially damaging sensitive avionics components or causing circuit upset. The best way to prevent ESD is to keep everything at the same potential or safely drain charges: use grounding paths, employ anti-static (ESD-safe) materials, and wear protective gear like wrist straps and proper PPE. In practice, aviation environments use grounded workstations, ESD mats, and specially packaged components to minimize charge buildup and protect hardware.

The other descriptions don’t fit ESD: magnetic interference involves magnetic fields and shielding, not static charge transfer; radiation and shielding relate to ionizing or non-ionizing radiation, not electrostatic discharge; and a pressure change with venting is unrelated to static electricity phenomena.