farad
/'færəd/
Definition
- Noun:
- The SI unit of electrical capacitance: A farad is the standard unit used to measure capacitance, which is the ability of a capacitor to store an electrical charge. It is defined as the capacitance of a capacitor that, when charged with one coulomb of electricity, has a potential difference of one volt between its plates.
Usage Examples
- Noun:
- A typical capacitor in an electronic circuit might have a capacitance of a few microfarads.
- The farad is a very large unit; most practical capacitors are rated in microfarads (µF) or picofarads (pF).
- One farad represents a very large amount of capacitance.
Advanced Usage
- "in farads": Used to specify a measurement of capacitance.
- The capacitor's value is expressed in farads.
- "farad per meter" (F/m): A derived unit for permittivity, a related electrical property.
- The permittivity of free space is approximately 8.854 × 10⁻¹² farads per meter.
Variants and Related Words
- Microfarad (µF) (n): A unit equal to one millionth (10⁻⁶) of a farad.
- This electrolytic capacitor is 1000 microfarads.
- Picofarad (pF) (n): A unit equal to one trillionth (10⁻¹²) of a farad.
- The tuning capacitor has a range from 10 to 100 picofarads.
- Nanofarad (nF) (n): A unit equal to one billionth (10⁻⁹) of a farad.
- Capacitance (n): The electrical property that the farad measures.
- Capacitance is measured in farads.
Synonyms
- F (abbreviation): The standard symbol for the farad.
- The capacitor is labeled 0.1 F.
Related Phrases and Contexts
- "farad is the SI unit of capacitance": A common phrase defining the term in technical contexts.
- "rated in farads": Describes how a capacitor's storage capacity is specified.
Noun
-
the capacitance of a capacitor that has an equal and opposite charge of 1 coulomb on each plate and a voltage difference of 1 volt between the plates
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