Basic Physics II Evidences - DrJJ - UiTM
Basic Physics II Evidences - DrJJ - UiTM
Basic Physics II Evidences - DrJJ - UiTM
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18.1 The Origin of ElectricityCutnell & Johnson 7EThe electrical nature ofmatter is inherentin atomic structure.m pm n= 1.673×10= 1.675×10−27−27kgkgm e= 9.11×10−31kge = 1.60×10−19CcoulombsElectric ChargesCharge quantization:charges exist in multiples ofan elementary charge, thecharge of an electronq = Ne =e , 2 e,..where N are the number ofelectrons & the elementarycharge e ise =1.6 x 10 -19 CNumber of charges in 1C??N=q/e =1 C/1.6 x 10 -19 CN = 6.25 x 10 18N12510Q (x10 -19 C)1.6=e3.2=2e80=5e16=10eCopyright Assoc. Prof. Dr. JaafarJantan a.k.a. Dr JJ, FSG, <strong>UiTM</strong> ShahAlam, Malaysia 4
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