Definition
The electrical pressure or potential difference between two points in a circuit, measured in volts. Voltage is what causes electrons to flow through a conductor, producing current.
Plain English
Voltage is the push behind electricity. The higher the voltage, the harder the push moving electrons through a wire.
Context Anchor
Seen in aircraft electrical-system discussions, battery checks, alternator or generator output, circuit troubleshooting, and cockpit electrical indications.
Derivation
Named after Alessandro Volta, the Italian physicist who built the first chemical battery in 1800. The unit ‘volt’ honours him, and ‘voltage’ simply means the amount of volts present.
Why Pilots Care
Correct voltage confirms batteries and generators are working so engines start and instruments stay powered.
Analogy
Think of voltage like water pressure in a hose. Higher pressure pushes more water through; higher voltage pushes more electrons through a wire.
Intuition Check
Voltage does not mean the amount of electricity being used. It means the electrical push available between two points; the actual movement of electric charge is a separate idea.
Example Sentence 1
The pilot noticed the bus voltage had dropped below 24 volts, indicating the alternator was no longer charging the battery.
Example Sentence 2
A drop in system voltage during flight can cause radios and navigation displays to reset.