microampere: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “microampere” mean?
A unit of electric current equal to one millionth of an ampere.
Audio
Pronunciation
Definition
Meaning and Definition
A unit of electric current equal to one millionth of an ampere.
A precise measurement used to describe very small electrical currents, common in fields like electronics, semiconductor physics, and biomedical instrumentation.
Dialectal Variation
British vs American Usage
Differences
No significant difference in usage. The spelling and pronunciation are identical. The unit is part of the international SI system.
Connotations
Purely technical and neutral in both varieties.
Frequency
Equally rare in both British and American English outside of specific technical fields.
Grammar
How to Use “microampere” in a Sentence
a current of X microamperesX microamperes (μA) of currentdraw/measure/register X microamperesVocabulary
Collocations
Examples
Examples of “microampere” in a Sentence
adjective
British English
- The microampere-range currents were critical for the experiment.
American English
- The sensor requires a microampere-level bias current.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in physics, engineering, and electronics textbooks and research papers.
Everyday
Never used in everyday conversation.
Technical
Core term in electrical engineering, circuit design, semiconductor testing, and electrophysiology.
Vocabulary
Synonyms of “microampere”
Neutral
Weak
Vocabulary
Antonyms of “microampere”
Watch out
Common Mistakes When Using “microampere”
- Misspelling as 'microamp' (common but informal shorthand; formal writing uses 'microampere').
- Confusing the prefix: a microampere (μA) is 10^-6 A, while a milliampere (mA) is 10^-3 A, which is 1000 times larger.
FAQ
Frequently Asked Questions
The symbol is μA, where μ is the Greek letter 'mu' representing the 'micro-' prefix.
In informal technical speech, yes. However, in formal scientific and engineering writing, 'microampere' or the symbol 'μA' is preferred.
In pacemakers, hearing aids, CMOS memory chips (for standby current), photodiodes, and sensitive laboratory ammeters.
A household appliance might use amps (e.g., 5A). A microampere is one millionth of that, an almost unimaginably small current for everyday power use, but common in sensitive electronics.
A unit of electric current equal to one millionth of an ampere.
Microampere is usually technical/scientific in register.
Microampere: in British English it is pronounced /ˌmaɪ.krəʊˈæm.peə(r)/, and in American English it is pronounced /ˌmaɪ.kroʊˈæm.pɪr/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of a MICROscopic current measured in AMPEREs. A microampere is to an ampere what a single grain of sand is to a large bucketful.
Conceptual Metaphor
ELECTRIC CURRENT IS A FLUID (but in extremely tiny, precisely measured droplets).
Practice
Quiz
Which of the following describes a microampere?