Electrical Energy and Capacitance59(b) With air between the plates, the capacitance is ( )()42212130232.0010mC8.85108.8510FNm2.0010mairACd−−−−×=∈=×=×⋅×(and with water )80κ=(between the plates, the capacitance is )1311808.8510F7.0810FairCC==×=×(The stored charge when water is between the plates is )11107.0810F6.00 V4.2510C42.5 nCQC V=∆=×=×=(c) When air is the dielectric between the plates, the stored charge is ( )13128.8510F6.00 V5.3110C5.31 pCairair=∆= ×=16.49(a) The dielectric constant for Teflon®is 2.1=, so the capacitance is ( )( )( )1224202.18.8510C17510m0.040 0ACd×∈2-3N m10 m×⋅×98.1310F8.13 nFC−=(b) For Teflon®, the dielectric strength is
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 12/09/2011 for the course PHYS 2020 taught by Professor Staff during the Fall '10 term at FIU.