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Details Title: Physics Description: Chapter 22 Total Flash Cards: 16 Created: 04/29/2006 16:58:51	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Electricity Definition General term for electrical phenomena, much like gravity has to do with gravitational phenomena, or sociology with social phenomena. Term Electrostatistics Definition The study of electric charge at rest. Term Conservation of charge Definition Electric charge is neither created nor destroyed. The total charge before an interaction equals the total charge after. Term Coulomb's Law Definition The relationship between electrical force, charge, and distance. If the charges are alike in sign, the force is repulsive; if the charges are unlike, the force is attractive. Term Coulomb Definition The SI unit of electrical charge. One coulomb is equal to the total charge of 6.25 x 10^18 electrons. Term Conductor Definition Any material having free charged particles that easily flow through it when an electric force acts on them. Term Insulator Definition A material without free charged particles and through which charge does not easily flow. Term Semiconductor Definition A device composed of material not only with properties that fall between a conductor and an insulator but with resistance that changes abruptly when other conditions change, such as temperature, voltage, and electric or magnetic fields. Term Superconductor Definition A material that is a perfect conductor with zero resistance to the flow of electric charge. Term Charging by contact Definition Transfer of electric charge between objects by rubbing or simple touching. Term Charging by induction Definition Redistribution of electric charges in and on objects caused by the electrical influence of a charged object close by but not in contact. Term Electrically Polarized Definition Term applied to an atom or molecule in which the charges are aligned so that one side has a slight excess of positive charge and the other side a slight excess of negative charge. Term Electric field Definition Defined as force per unit charge, it can be considered to be an "aura" surrounding charged objects and is a storehouse of electric energy. About a charged point, the field decreases with distance according to the inverse-square law, like a gravitational field. Between oppositely charged parallel plates, the electric field is uniform. Term Electric potential energy Definition The energy a charged object possesses by virtue of its location in an electric field. Term Electric Potential Definition The electric potential energy per unit of charge, measured in volts, and often called voltage. Term Capacitor Definition An electrical device-in its simplest form, a pair of paralllel conducting plates seperated by a small distance-that stores electric charge and energy.