Ampere - Law Dictionary Search Results
Home Dictionary Name: ampereAmpere
Ampere, means a unit of electric current and is the unvarying electric current which when passed through a solution of nitrate of silver in water, in accordance with the specification set out in Annexure I, deposits silver at the rate of 0.001118 of a gramme per second; the aforesaid unit is equivalent to the current which, in passing through the suspended coil of wire forming part of the instrument marked 'Government of India Ampere Standard Verified' when the suspended coil is in its sighted position, exerts a force which is exactly balanced by the force exerted by gravity in Calcutta on the counter balancing iridio-platinum weight of the said instrument. [Indian Electricity Rules, 1956, s. 2 (1) (c)]...
electric current
the movement of electrically charged particles atoms or ions through solids liquids gases or free space the term is usually used of relatively smooth movements of electric charge through conductors whether constant or variable Sudden movements of charge are usually referred to by other terms such as spark or lightning or discharge In metallic conductors the electric current is usually due to movement of electrons through the metal The current is measured as the rate of movement of charge per unit time and is counted in units of amperes As a formal definition the direction of movement of electric current is considered as the same as the direction of movement of positive charge or in a direction opposite to the movement of negative charge Electric current may move constantly in a single direction called direct current abbreviated DC or may move alternately in one direction and then the opposite direction called alternating current abbreviated AC...
joule
A unit of work which is equal to 107 ergs the unit of work in the C G S system of units and is equivalent to one watt second the energy expended in one second by an electric current of one ampere in a resistance of one ohm also called the absolute joule It is abbreviated J or j The international joule is slightly larger being 1000167 times the absolute joule The absolute joule is approximately equal to 0737562 foot pounds 0239006 gram calories small calories and 372506 x 10 7 horsepower hours and 0000948451 Btu...
Volt
Volt, means a unit of electro-motive force and is the electric pressure which, when steadily applied to a conductor, the resistance of which is one ohm, will produce a current of one ampere. [Indian Electri-city Rules, 1956, R. 2 (1) (au)]...
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