210CHAPTER 21 21.21(a) ()( )322240 Hz2.5 H3.810 LLππ===×XfΩ3×6112.722240 Hz0.2510FCXfCπ−=×Ω21.4 kΩ= Ω2223900 3.82.710LCZRXX=+− =Ω+ −×(b) maxmax3140 V0.10 A1.4VZ∆=×ΩI(c) ( )33.82.7tantan51900 XXR−−−×Ω−Ωφ=°(d) 0>, so the voltage leads the current 21.22361.12260Hz2.510FCXfC−=××Ω( )22223220.127.116.110= +−=+=×3Ω(a) maxmax3170 V0.11 A1.6VZ∆=I(b) ( )32, maxmax0.11 A1.21.310 VRVIR=×Ω=×∆=( ), maxmax0.11 A1.11.1CCX∆= =×Ω=×(c) When the instantaneous current iis zero, the instantaneous voltage across the resistor is 0RviR∆==. The instantaneous voltage across a capacitor is always 90° or a quarter cycle out of phase with the instantaneous current. Thus, when
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This note was uploaded on 12/09/2011 for the course PHYS 2020 taught by Professor Staff during the Fall '10 term at FIU.