RC Circuits - UIUC
Physics 102:Lecture 7RC CircuitsRC CircuitsPhysics 102: Lecture 7, Slide 1RC Circuits Circuits that have both resistorsandcapacitors:RKRNaRClC+++ K Na Cl Withresistancein the circuitscapacitorsdo notS With resistancein the Circuits , capacitorsdo not chargeand dischargeinstantaneously it takes time (even if only fractions of a second).Physics 102: Lecture 7, Slide 2(even if only fractions of a second).RC CiiRC CircuitsUsed to controllably store and release energyToday: RC Circuits Charging Capacitors Discharging Capacitors Intermediate Behavior Physics 102: Lecture 7, Slide 3Charging CapacitorsStoring energy to use later Capacitor is initially uncharged and switch is open. Switch is then closed. What is current I0in circuit immediately thereafter?RCy What is current I in circuit alongtimelater? Physics 102: Lecture 7, Slide 4a long time later?SCharging Capacitors: t = 0 Capacitor is initially uncharged and ihiSihi h l dCswitch is open.
ACT/CheckPoint 1 Both switches are initially open, and the capacitor is uncharged. What is the current through the battery just after switch S 1 is closed? 2R 1) I b = 0 2) I b = E /(3R ) +-ε C R 3) I b = E /(2R) 4) I b = E /R I b +-+-S 2 S 1 Capacitor acts like a wire the instant the switch is instant the switch is closed: I /(2R) Physics 102 ...
Download RC Circuits - UIUC
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: