Transcription of RC Circuits - UIUC
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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 3 Charging 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.
b=0 because the battery and capacitor are in series. C Physics 102: Lecture 7, Slide 8 ... ε C=1 mF R body +-+-S 2 S 1 After charging for 2 s, S 1 is opened. What is the current through the patient through the patient 01 s after S0.1 s after S2is closed if is closed if RRbody=100 =100 ...
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