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ID:32505420
大小:2.87 MB
页数:66页
时间:2019-02-09
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1、1Electricity-101AirlineTransitionCourse2LessonObjectivesDevelopabasicunderstandingofphysicsrelatedtoElectricalsystemsLookatspecificelectricalcomponentsLearnthebasicoperationofelectricalsystems3ElectricalTheory4ElectricalPhysicsElectricity:theflowofelectronsWhat’sanel
2、ectron?AverysmallparticlethatorbitsthenucleusofanatomWhenoneelectronispassedfromoneatomtoanotherelectricityisproduced5WhydoElectronsFlow?Abalancedatomhasthreeparts:Neutrons:NochargeProtons:PositivelychargedElectrons:NegativelychargedIonspullelectronsoffoftheatomsandl
3、eavesthemwithmoreprotonsthanelectrons.Theatomnowholdsapositivechargebecauseoftheunbalanceofelectronsandprotons.Moreprotons(positivelychargedparticles)resultsinapositivecharge.6MoreElectricalKnowledgeConductors:Holdtheirelectronslooselytoallowtheexchangeofelectronsmor
4、eeasilyInsulators:Holdtheirelectronsmoretightlysoelectronscan’tflowaseasily7MoreElectricalKnowledgeElectromotiveforce:TheforcethatcauseselectronstoflowAgroupofpositivelychargedparticleswouldflowelectronstowardagroupofnegativelychargedparticlesUsuallymeasuredinVoltsEl
5、ectronFlow:FrompositivetonegativeAreaofExcessElectrons(NegativeCharge)AreaofElectronDeficiency(PositivelyCharged)8ElectricalMeasurementQuantity:thecoulomb(culom)isthebasicunitofelectronflow,1coulomb6.28x1018That’s6,280,000,000,000,000,000electronsFlow:1coulombperseco
6、nd=oneAmperePressure:pressurerequiredtoforceoneampofflowthroughoneohmofresistance,thepotentialelectromotiveforce=1Volt9ElectricalMeasurementResistance:oppositiontocurrentflow,theamountofforcetoallowapressureof1volttoforceaflowof1amp=OhmsPower:1ampofflowunderofpressur
7、eofonevolt=1Watt10MagnetismMagnet:isabodythathasthepropertyofattractingironandproducingmagneticfieldsexternaltoitself.Linesofmagneticforce,orFLUX,leavethemagnet’snorthpole,atrightanglestoitssurface,andreenterthemagnet’ssouthpoleinthesamemanor.Ex:theEarth11Electromagn
8、etsConductivematerialholdingelectricalcurrentwillproduceaninvisiblemagneticfieldaroundthematerial.Whenelectricityissentthroughacoil
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