voltage
B2Technical, formal, and occasionally figurative in everyday use.
Definition
Meaning
The electromotive force or potential difference between two points in an electric circuit, measured in volts; the "pressure" that pushes electric current.
Figuratively, a high level of intensity, excitement, or tension in a situation, event, or atmosphere, analogous to electrical energy.
Linguistics
Semantic Notes
Primarily a technical term in physics and engineering. Its figurative use is a metaphor, suggesting a charged or high-energy atmosphere.
Dialectal Variation
British vs American Usage
Differences
No significant differences in definition or technical use. Spelling and pronunciation are the primary variations. The figurative use is equally common in both varieties.
Connotations
Identical technical connotations. In figurative use, it implies a palpable, energetic, or tense atmosphere.
Frequency
Slightly higher frequency in American media in figurative contexts, but the difference is marginal.
Vocabulary
Collocations
Grammar
Valency Patterns
voltage across + (component/circuit)voltage of + (numerical value)voltage between + (point A) and + (point B)voltage supplied to + (device)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “high-voltage (adj.) – exciting, intense, or dangerous.”
Usage
Context Usage
Business
Rare, except in industries like energy, manufacturing, or electronics (e.g., 'fluctuations in line voltage affected production').
Academic
Common in physics, engineering, and related STEM fields. Used precisely to describe electrical phenomena.
Everyday
Used when discussing batteries, household electricity, or figuratively (e.g., 'There was a real voltage in the room before the announcement').
Technical
The primary context. Defined, measured, and manipulated in electrical and electronic engineering.
Examples
By Part of Speech
verb
British English
- The system is designed to voltage-regulate automatically.
- (rare as verb; usually 'apply a voltage' or 'regulate voltage' is used)
American English
- You need to voltage-test the outlet before proceeding.
- (rare as verb; usually 'check the voltage' is used)
Examples
By CEFR Level
- This battery has a voltage of 1.5 volts.
- Do not touch those wires – high voltage!
- The voltage in my country is 230 volts.
- We need a transformer to change the voltage for our appliance.
- A sudden drop in voltage can cause computers to shut down unexpectedly.
- The political debate carried a high emotional voltage.
- The device operates within a wide input voltage range, making it suitable for international use.
- The voltage between the two nodes was measured using a differential probe.
Learning
Memory Aids
Mnemonic
Think of VOLTage as the electrical 'VOLT-age' or strength, like the 'pressure' from a volt battery.
Conceptual Metaphor
ELECTRICITY IS A FLUID / PRESSURE; INTENSITY IS ELECTRICAL ENERGY. Voltage is the pressure in the pipe; current is the flow. A tense situation is 'charged' with voltage.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'current' (ток). Voltage (напряжение) is the cause, current (ток) is the effect.
- Avoid using 'вольтаж' in Russian as a direct translation for the figurative sense; it is a barbarism. Use 'накал', 'напряжение' instead.
Common Mistakes
- Using 'voltage' to mean 'electric current' (e.g., 'The voltage killed him' – technically, it's the current that does the harm).
- Incorrect preposition: 'the voltage in the wire' is less precise than 'the voltage across the wire'.
- Figurative overuse, making prose sound clichéd.
Practice
Quiz
In the metaphor 'the voltage in the courtroom was palpable,' what does 'voltage' most closely mean?
FAQ
Frequently Asked Questions
Voltage (measured in volts) is the electrical 'pressure' or potential difference that causes current to flow. Current (measured in amperes) is the rate of flow of the electric charge itself.
No, 'voltage' is almost exclusively a noun. In technical jargon, you might hear 'to voltage-test,' but the standard phrasing is 'to test the voltage' or 'to apply a voltage.'
Yes, but it is a figurative cliché. It is understood to mean a situation full of excitement, anticipation, or tension.
Because the mains voltage (e.g., 110V in the US vs. 230V in the UK) may be different. An adapter only changes the plug shape; a voltage converter is needed if the appliance doesn't support dual voltage.