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首页 [物理]高二物理知识点总结

[物理]高二物理知识点总结.doc

[物理]高二物理知识点总结

he桂兰
2018-12-18 0人阅读 举报 0 0 暂无简介

简介:本文档为《[物理]高二物理知识点总结doc》,可适用于社会民生领域

物理高二物理知识点总结EighthchapterelectricfieldOne,threewaysofgeneratingelectricity:,triboelectrification:():withsilkfrictionbearingontheglassrodwithcharge()negativecharge:withthefurfrictionrubberbarcharge()theessence:thetransferofelectronsfromoneobjecttoanotherobject,contact:():theessenceofelectricchargefromoneobjecttoanotherobject()twoidenticalobjectsincontactwitheachotherafterthechargesplit(),chargeneutralization:heterogeneouschargeequalcontactwitheachother,andtheexternalchargematchedoffsetpowerisnotsignificant,thiskindofphenomenoncallchargeneutralization,inductivechargetransfer:theconductornearunchargedconductor,canbecharged()thebasicpropertiesofcharge:likechargesrepeleachother,unlikechargesattracteachother()theessence:theconductorchargefromoneparttoanothershift()inductiveFromtheendoftheconductorchargenearwithdifferentcharges,endwiththesamecharge,thebasicnatureofthecharge:toattractlightandsmallobjectsTwo,thelawofconservationofcharge:thechargecannotbecreated,norisitdisappear,itcanonlybetransferredfromoneobjecttoanotherobject,orfromtheobjectpartofthetransfertoanotherpartinthetransferprocess,thesameamountofchargeThreeThechargeofanelectroniscalledthecharge,anditisexpressedinE,e=*c,aprotoncarriesachargeequaltoayuancharge,anychargedobjectischargedwithanintegralchargeofanintegralmultipleoftheelementchargeFour,theCoulomb'sLaw:twostaticpointchargeinteractionbetweenvacuum,andtheproductisproportionaltotheamountofchargetheybringwiththem,betweenthetwoisinverselyproportionaltothesquareofthedistance,thedirectionoftheforceintheirconnectionTheforcebetweenthechargesiscalledCoulombforce,,theformula:F=kQQr(k=*Nmkg),Coulomb'slawappliesonlytopointcharges(thevolumeofthechargecanbeneglected),CoulombforceisnotgravityFiveelectricfield:anelectricfieldisasubstancethatgeneratesstaticelectricitybetweenpointcharges,aslongasthechargeexists,itexistsintheelectricfieldaroundthechargebasicproperties:electricfield,chargeelectricfieldintowhichthe(staticandmoving)powerfulrolethisforceiscalledtheelectricforce,electricfield,magneticfield,gravityfieldisakindofmaterialSix,theelectricfieldstrength:putintheintensityofelectricfieldofapointchargeelectricforceofFwiththeratioofchargeQitiscalledthepoint,thedefinitionofEis:E=FqelectricfieldintensityFistheelectricfieldforceqisatestcharge,theelectricfieldintensityisavector,apointthedirectionoftheelectricfieldintheelectricfieldistheelectricforceinthedirectionofthepositivecharge(electricforceandnegativechargeintheoppositedirection),thisformulaisapplicabletoallelectricfieldelectricfieldstrengthformula,pointcharge:E=kQrSeven,theelectricfieldsuperpositioninspace:ifseveralpointchargesexistatthesametime,thespaceofap

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[物理]高二物理知识点总结

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