Generalformulac=q/uspecialformulaforparallelplatecapacitors:interplateelectricfieldstrengthe=u/d,capacitorcapacitancedeterminantc=εs/4πkdwiththerapiddevelopmentofelectronicinformationtechnology,theupgradingspeedofdigitalelectronicproductsisgettingfasterandfaster.Theproductionandsalesofc***umerelectronicproducts,suchasflatpanelTV(lcdandpdp),notebookcomputers,digitalcameras,etc.),continuedtogrow,whichledtothegrowthofcapacitorindustry.)