# science ch. 15

 .remove_background_ad { border: 1px solid #555555; padding: .75em; margin: .75em; background-color: #e7e7e7; } .rmbg_image { max-height: 80px; } flow of electrons or other charged particles from one place to another current electricity what is the SI for with the "force" with which an electric current flows voltage Formula to find power used when given voltage and current P =VI electricity that flows only in one direction direct current (DC) Electricity that continually alternates direction alternating current (AC) SI unit for measuring the amount of current ampere materials through which current flows easily conductors materials through which current does not easily flow insulators amount a certain object hinders electron flow resistance what unit is used to measure resistance quantity ohm a material that allows current to flow through it with no resistance at all superconductor an electrical device designed to add resistance to a circuit resistor what law states that current flowing through a conductor is directly proportional to the voltage and inversely proportional to the resistance voltage = current x resistance Ohm's law V = IR rate of charge flow current four factors affecting resistance of a conductor the diameter of the conductor temperaturelength of the conductor type of material heat produced by electric friction Joule heat three parts of a simple electric circuit source of current conductorsload a circuit that contains a complete path for a current to flow through closed circuit a circuit that contains a gap that the electrons cannot pass open circuit dangerous situation that occurs if electricity takes a "short cut" through the circuit short circuit narrow strip of metal housed in a protective, insulated case and protects against excessive current fuse what type of circuit has its load arranged so that the electric current flows through each load one after another series circuit circuit which has the loads arranged in separate branches so the current is divided among them parallel circuit what was the first type of electric light suitable for house hold use incandescent lamp what produces light by passing an electric current through a long tube filled with a low-pressure mixture of mercury vapor and argon fluorescent lamp a simple device that converts electricity to a back and forth motion solenoid device for communicating over long distance by means of electro magnets telegraph most important device for converting electricity into motion electric motor rotating electromagnet that aligns with the poles of the field magnet armature group of electrochemical cells connected together as a single source of current battery device that uses electromagnetic induction to produce electricity generator semiconductor that emits light when a direct electric current is applied LED (light-emitting diode) LED: light-emitting diodes an electrical switch operated by an electromagnet relay converts pulses of electricity into sound waves loudspeaker ability of magnetism to convert mechanical motion into electrical current electromagnetic induction device that increases or decreases the voltage of an alternating current using electromagnetic induction transformer three ways to increase strength of an electromagnetically induced current speed of magnetnumber of wire turnsstrength of magnet what generator uses a fluid as a moving conductor magnetohydrodynamic unit used by electric companies used to charge for electricity Kilowatt-hour name of the current for electric current that flows in both directions .remove_background_ad { border: 1px solid #555555; padding: .75em; margin: .75em; background-color: #e7e7e7; } .rmbg_image { max-height: 80px; } AuthorRayna ID329859 Card Setscience ch. 15 DescriptionA Beka Updated2017-04-06T00:20:26Z Show Answers