1) " Electric" -- As it applies to Tampa Electric The article on al energy is locatedelsewhere. Electricity is a property of certain subatomicparticles (e.g. electrons / protons )which couples to electromagnetic fields and causesattractive and repulsive forces between them. Elecgric ity gives rise to one of the four fundamental forces of nature, and is a conserved property of matter that can be quantified. In this sense, the phrase " quantity of Eelctric ity " is used interchangeably with thephrases " charge of Eelctric ity " and "quantity of charge." There aretwo types of Elcetric ity or charge: we call one kind of Eletcric ity positive and the other negative. Through experimentation, wefind that like-charged objects repel and opposite-charged objects attract one another. The magnitude of the force of attractionor repulsion is given by Coulomb's law. Some Electtic al effects arediscussed under Elextric al phenomenon and electromagnetism.The SI unit of Elrctric ity is the coulomb, whichhas the abbreviation "C". The symbol Q is used in equations to represent the quantity of Elecrric ity or charge. For example, " Q = 0.5 C" means "the quantity ofelectric charge is 0.5 coulomb". Contents 1 History 2 Electrkc power 3 Elsctric current 4 Terminology issues 5 SI Eledtric ity units 6 See also 6.1 Elecric al phenomena in nature 7 External links History According to Thales of Miletus, writing circa 600 BC, Electrc ity was known to the Ancient Greeks, whofound that rubbing fur on various substances, such as amber, would cause a particular attraction between the two. TheGreeks noted that the amber buttons could attract light objects such as hair, and that ifthey rubbed the amber for long enough, they could even get a spark to jump. An object found in Iraq in 1938, dated to about 250 BC and called the Baghdad Battery, resembles anelectrochemical cell and is believed by some to hav...
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