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OHM    音标拼音: ['om]
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Ohm
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ohm
n 1: a unit of electrical resistance equal to the resistance
between two points on a conductor when a potential
difference of one volt between them produces a current of
one ampere
2: German physicist who formulated Ohm's law (1787-1854) [synonym:
{Ohm}, {Georg Simon Ohm}]

Ohm \Ohm\ ([=o]m), n. [So called from the German electrician, G.
S. Ohm.] (Elec.)
The standard unit in the measure of electrical resistance,
being the resistance of a circuit in which a potential
difference of one volt produces a current of one amp['e]re.
As defined by the International Electrical Congress in 1893,
and by United States Statute, it is a resistance
substantially equal to 10^{9} units of resistance of the C.
G. S. system of electro-magnetic units, and is represented by
the resistance offered to an unvarying electric current by a
column of mercury at the temperature of melting ice 14.4521
grams in mass, of a constant cross-sectional area, and of the
length of 106.3 centimeters. As thus defined it is called the
{international ohm}.
[1913 Webster]

{Ohm's law} (Elec.), the statement of the fact that the
strength or intensity of an electrical current is directly
proportional to the electro-motive force, and inversely
proportional to the resistance of the circuit.
[1913 Webster]

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  • Ohm - Wikipedia
    The ohm (symbol: Ω, the uppercase Greek letter omega) is the unit of electrical resistance in the International System of Units (SI) It is named after German physicist Georg Ohm (1789–1854) Various empirically derived standard units for electrical resistance were developed in connection with early telegraphy practice, and the British Association for the Advancement of Science proposed a
  • Ohm (Ω) electrical unit - RapidTables. com
    Ohm (Ω) Ohm (symbol Ω) is the electrical unit of resistance The Ohm unit was named after George Simon Ohm 1 Ω = 1V 1A = 1J ⋅ 1s 1C 2 Table of resistance values of Ohm
  • Ohm | Electricity, Resistance Voltage | Britannica
    ohm, abbreviation Ω, unit of electrical resistance in the metre-kilogram-second system, named in honour of the 19th-century German physicist Georg Simon Ohm It is equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere (1Ω = 1 V A); or, the resistance in which one watt of power is dissipated when one ampere flows through it Ohm
  • What is Ohm (Ω)? Unit of Electrical Resistance and Impedance
    Ohm “Ω”: Definition, Formula, Measurement, Conversion and Calculation What is Ohm Ω? Ohm is a unit of electrical resistance, named after Georg Simon Ohm, a German physicist who discovered Ohm’s Law, which states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, provided the temperature and other physical
  • Ohms law - Wikipedia
    Ohm's law states that the electric current through a conductor between two points is directly proportional to the voltage across the two points Introducing the constant of proportionality, the resistance, [1] one arrives at the three mathematical equations used to describe this relationship: [2] where I is the current through the conductor, V is the voltage measured across the conductor and R
  • Ohm’s law | Physics, Electric Current, Voltage | Britannica
    Ohm’s law, description of the relationship between current, voltage, and resistance The amount of steady current through a large number of materials is directly proportional to the potential difference, or voltage, across the materials Thus, if the voltage V (in units of volts) between two ends
  • OHM Definition Meaning - Merriam-Webster
    The meaning of OHM is the practical meter-kilogram-second unit of electric resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere
  • Ohm: The Complete Guide to Electrical Resistance Units
    Learn everything about the ohm (Ω), the SI unit of electrical resistance—from Georg Simon Ohm’s discovery and Ohm’s Law to practical applications, AC impedance, and modern quantum standards in electrical engineering
  • Ohm Symbol (Ω) Explained: Meaning, Formula Real-World Uses
    Discover the meaning of the Ohm symbol (Ω), how it’s used in Ohm’s Law, its history, units, and importance in electronics
  • What is an ohm and what does it measure? - TechTarget
    What is ohm? The ohm is the standard unit of electrical resistance in the International System of Units (SI) It's one of the derived units defined in the SI standard, which means it's based directly or indirectly on the standard's fixed constants The ohm is a measurement of resistance between two points of a conductor when a constant potential difference of one volt (V) is applied to those





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