ohmmeter
LowTechnical
Definition
Meaning
An instrument for measuring electrical resistance in ohms.
A device used in electrical engineering and electronics to measure the opposition to current flow in a circuit, typically featuring a scale calibrated in ohms.
Linguistics
Semantic Notes
The term is a compound of 'ohm' (the unit of electrical resistance) and 'meter' (a measuring instrument). It refers specifically to a device for measuring resistance, not other electrical properties.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is identical. The pronunciation may vary slightly.
Connotations
Purely technical in both varieties, with no additional connotations.
Frequency
Equally low-frequency in both technical contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
[Subject] used an ohmmeter to [measure/check] [Object].The [technician/engineer] connected the ohmmeter [to/across] the [component/circuit].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None”
Usage
Context Usage
Business
Rare, except in procurement or technical specification documents for electrical equipment.
Academic
Used in physics, electrical engineering, and electronics textbooks and lab instructions.
Everyday
Virtually never used in everyday conversation.
Technical
Standard term in electrical and electronic engineering, repair, and maintenance manuals.
Examples
By Part of Speech
verb
British English
- The technician will ohmmeter the circuit to check for faults. (rare, technical jargon)
American English
- You need to ohmmeter the resistor before installing it. (rare, technical jargon)
adjective
British English
- The ohmmeter function on the multimeter is faulty.
American English
- He took an ohmmeter reading from the terminal.
Examples
By CEFR Level
- The electrician used a tool to check the wires.
- To find the broken connection, she used an ohmmeter to test the circuit's resistance.
- After calibrating the digital ohmmeter, the engineer measured the impedance of the coil, noting a significant deviation from the expected value.
Learning
Memory Aids
Mnemonic
Think: 'OHM' measures resistance + 'METER' measures things = OHMMETER measures resistance.
Conceptual Metaphor
A detective for electrical 'blockage' or 'friction'.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque 'омметр' in non-technical contexts as it sounds highly specialised. In casual speech, Russians might use 'тестер' or 'мультиметр' more broadly.
Common Mistakes
- Confusing it with a voltmeter or ammeter. Using 'ohmmeter' as a general term for any electrical meter.
- Misspelling as 'ommeter' or 'ohm meter' (though 'ohm meter' is an accepted variant).
Practice
Quiz
What does an ohmmeter primarily measure?
FAQ
Frequently Asked Questions
No. An ohmmeter measures only resistance. A multimeter is a multifunction instrument that can measure resistance (acting as an ohmmeter), voltage, current, and often other properties.
No, you should never use an ohmmeter on a live (energised) circuit. It requires the circuit to be powered off to provide a safe and accurate resistance reading.
An infinite (or very high) resistance reading typically indicates an open circuit—a break in the path where no current can flow, like a broken wire or a blown fuse.
The symbol for the ohm, the unit of electrical resistance, is the Greek letter omega (Ω).