Adjacent Words

ohm definitions

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WordNet (r) 3.0 (2005)

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) [syn: Ohm, Georg Simon Ohm]

Merriam Webster's

noun Etymology: Georg Simon Ohm Date: 1867 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 • ohmic adjective • ohmically adverb

Merriam Webster's

biographical name Georg Simon 1787-1854 German physicist

Oxford Reference Dictionary

n. Electr. the SI unit of resistance, transmitting a current of one ampere when subjected to a potential difference of one volt. Derivatives: ohmage n. Etymology: G. S. Ohm, Ger. physicist d. 1854

Webster's 1913 Dictionary

Ohm Ohm, 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. 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.

Collin's Cobuild Dictionary

(ohms) An ohm is a unit which is used to measure electrical resistance. (TECHNICAL) N-COUNT