Ampere
['æmpeə(r)] or [æm'pɪr]
[æm'pɪr]
Definition
(noun.) the basic unit of electric current adopted under the Systeme International d'Unites; 'a typical household circuit carries 15 to 50 amps'.
(noun.) a former unit of electric current (slightly smaller than the SI ampere).
Typed by Connie--From WordNet
Definition
(n.) Alt. of Ampere
(n.) The unit of electric current; -- defined by the International Electrical Congress in 1893 and by U. S. Statute as, one tenth of the unit of current of the C. G. S. system of electro-magnetic units, or the practical equivalent of the unvarying current which, when passed through a standard solution of nitrate of silver in water, deposits silver at the rate of 0.001118 grams per second. Called also the international ampere.
Edited by Jason
Examples
- Lieb wrote from Milan, Italy, that he had in use on the Edison system there 360 meters ranging from 350 ampere-hours per month up to 30,000. Frank Lewis Dyer. Edison, His Life and Inventions.
- We had an index like a steam-gauge, called an ampere-meter, to indicate the amount of current going out. Frank Lewis Dyer. Edison, His Life and Inventions.
- He replied: 'Everything is red-hot, and the ampere-meter has made seventeen revolutions. Frank Lewis Dyer. Edison, His Life and Inventions.
- A current is said to be one ampere strong if it will deposit silver on an electrode at the rate of 0. Bertha M. Clark. General Science.
- A current of one ampere, having a voltage of one volt, will furnish in the course of one hour one watt hour of energy. Bertha M. Clark. General Science.
- The unit of electric power is called the watt; it is the power furnished by a current of one ampere with a voltage of one volt. Bertha M. Clark. General Science.
- The watt then would be the volt multiplied by the ampere; thus 500 watts would be 10 amperes at 50 volts, or 50 amperes at 10 volts. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- Ampere would be the quantity, or volume unit, or cross section of the hose pipe, and the ohm would be the unit of frictional resistance. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- Discoveries in Electro-magnetism by Ampere and Arago. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- The meters commonly used measure the amperes, volts, and time automatically, and register the electric power supplied in watt hours. Bertha M. Clark. General Science.
- The early arc lamps were rated to require 9 to 10 amperes of current, at 45 volts pressure each, receiving which they were estimated to give 2000 c. Frank Lewis Dyer. Edison, His Life and Inventions.
- An iron bar was also used, polished, and with a man standing on it to insure solid contact; but only one thousand amperes passed through it--i. Frank Lewis Dyer. Edison, His Life and Inventions.
- Knowing the time during which the current has run, and the amount of deposit, the strength of the current in amperes can be calculated. Bertha M. Clark. General Science.
- It was several months before he could convey one hundred amperes by means of such contacts, but he worked out at last a satisfactory device which was equal to the task. Frank Lewis Dyer. Edison, His Life and Inventions.
- Thus a current of from one to two volts, and one to several thousand amperes, is best suited. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- For the locomotive a four-wheel iron truck was used, and upon it was mounted one of the long Z type 110-volt Edison dynamos, with a capacity of 75 amperes, which was to be used as a motor. Frank Lewis Dyer. Edison, His Life and Inventions.
- The next point was to secure a joint between contiguous rails such as would permit of the passage of several thousand amperes without introducing undue resistance. Frank Lewis Dyer. Edison, His Life and Inventions.
- The watt then would be the volt multiplied by the ampere; thus 500 watts would be 10 amperes at 50 volts, or 50 amperes at 10 volts. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
Checked by Annabelle