Final answer:
Arcing happens when high-amperage current jumps through air, circuits open or close, or static electricity is discharged in a phenomenon known as an electric arc due to electric breakdown.
Explanation:
Arcing occurs when high-amperage current jumps through air, circuits are opening or closing, or static electricity is discharged. When an electric current passes through the air, an electric arc is produced, generating heat and light. This can lead to electric breakdown where air becomes conducting at a certain electric field strength.
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