Rheostat Meaning and Definition
Rheostat
Pronunciation
/roʊˈstænd/
Part of Speech
Noun
Definition
A device that regulates the flow of electric current by adjusting the resistance in a circuit, often used to control the brightness of a light or the speed of a motor.
Examples
- The rheostat was used to adjust the brightness of the stage lights.
- The engineer used a rheostat to fine-tune the speed of the engine.
- The rheostat in the audio equipment allowed for precise control over the volume.
- The rheostat was adjusted to optimize the power output of the generator.
- The engineer specified a rheostat as a safety device to prevent overheating.
Etymology
The term “rheostat” was coined in the late 19th century, derived from the Greek words “reos” meaning “flow” and “statikos” meaning “staying” or “adjusting”.
Usage Notes
Rheostats are commonly used in electronic devices to control the flow of current and adjust the output.
Cultural References
Rheostats have been featured in various films and TV shows, such as “Back to the Future” and “The Simpsons”, as a symbol of technological innovation.
Idiomatic Expressions or Phrases
None
Related Words or Phrases
- Variable resistor
- Current regulator
- Power control
Collocations
- Rheostat and motor
- Rheostat and light
- Rheostat and generator
Frequency of Use
Rheostats are commonly used in technical and scientific contexts, but are not often encountered in everyday conversation.
Common Misspellings
Rheastat, Reostat, Roestat