Definition
The amount of electrical energy per unit of charge at a given point in a circuit, measured in volts. A difference in electrical potential between two points is what causes electrons to flow when a path is provided between them.
Plain English
It is the electrical 'pressure' at a point in a circuit. When one point has more of this pressure than another, current will flow from the higher to the lower point if they are connected.
Context Anchor
Seen in aircraft electrical-system discussions, battery checks, generator output checks, wiring diagrams, and troubleshooting of electrical equipment.
Derivation
From Latin 'potentia,' meaning power or capability. Electrical potential is the capability to do electrical work — the stored ability to push charge through a circuit.
Why Pilots Care
Aircraft systems depend on stable electrical potential (voltage). If the potential drops too low, instruments, radios, and ignition components may not work correctly. Recognizing voltage as 'electrical pressure' helps a technician troubleshoot weak buses, drained batteries, and failing generators.
Analogy
Electrical potential is like water pressure in a hose. Higher pressure gives water more ability to move; higher electrical potential gives electricity more ability to move through a complete circuit.
Grounding Statement
Think of electrical potential like water pressure in a pipe — the higher the pressure on one end compared to the other, the stronger the flow when you open a valve between them.
Intuition Check
“Potential” does not mean “possible” here. It means stored electrical ability, measured as voltage, that can make electricity move when a path is available.
Example Sentence 1
The technician measured the electrical potential across the battery terminals and found 12.6 volts, indicating a fully charged battery.
Example Sentence 2
A drop in electrical potential along the bus bar indicated a loose connection.