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