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Electricity

QuestionAnswer
electricity the science dealing with electric charges and currents
voltage electromotive force or potential difference expressed in volts
filament the threadlike conductor in the light bulb
ammeter an instrument for measuring current in amperes
conductivity a measure of the ability of a given substance to conduct electric current
insulator a material of such low conductivity that the flow of current through it is negligible
ohm the SI unit of electrical resistance
battery two or more cells electrically connected to work together to produce electric energy
transformer an electric device consisting essentially of two or more windings wound on the same core
rectifier an apparatus in which current flows more readily in one direction than the other
neutral a system that has neither positive nor negative electric charge
volt the SI unit of potential difference and electromotive force
power supply a device that provides power to electric machines
voltmeter a calibrated instrument for measuring the potential difference between two points
fuse protective device containing a conductor that melts under heat produced by an excess current
Created by: Xtreme619
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