Electrical discharge is characterized by:

• A. The flow of electric charge through matter.
• B. The buildup of charges (strong electric fields) that can create a conductive channel in the air.
• C. The energy stored in a battery.
• D. The rate at which energy is transferred in a circuit.

Answer: (A)

Electrical discharge is the rapid flow of electric charge through a material under the influence of a potential difference. This movement of charges is what you observe as current, often seen as a spark or arc when air becomes temporarily conductive. The key idea is the actual movement of charge, not just stored energy or the conditions that lead to discharge. For example, a battery stores chemical energy, but the discharge event is the flow of charges as current, and the rate of energy transfer describes power, not the defining action of discharge. The buildup of charges that creates a conductive path in the air describes how discharge can start, but the discharge itself is the ensuing flow of charge.