Slide 1Topics for the next weekfinal exam schedulesemiconductorsSlide 5All because Someone AskedSlide 7Slide 8CalculationSlide 10Slide 11Slide 12W10D2 CAPACITORSChapter 20 MaterialsTOPICS FOR THE NEXT WEEKWednesday (Today)Don’t miss the new WA that has been posted.Today we work on Capacitors from Chapter 20Look at the chapter – we have already covered a lot of it!Watch for another WA later in the week on this material.FridayQuiz #4The Evan ShowComplete the chapterMonday – Probably start the next chapter.FINAL EXAM SCHEDULEhttp://www.registrar.sdes.ucf.edu/calendar/exam/2011/fall/ (on class website)Cut & Past – Link doesn’t work.Check for conflicts on Saturday, 12/3. If we can’t do that we will do Saturday, 12/10 (yuck).If I don’t hear from you, we will go ahead with the schedule determination. No make-up exam will be offered if you can’t make the final at that time.SEMICONDUCTORSALL BECAUSE SOMEONE ASKEDElectron and hole mobility versus temperature. The doping density equals 1016 (top curve), 1017 and 1018 (bottom curve) cm-3. (For Silicon … JBB)Find the power output of a battery with an emf of 1.6 V generating a current of 6 A (essentially the short circuit or maximum current for one of our batteries).A) 9.6 WB) 6 WC) 1 WD) 1.6 WA 60 W bulb (240 Ohms) and a 75W (192Ohms) bulb are in series connected to a 120 volt wall socket. Which bulb will be brighter?a. 60Wb. 75Wc. They use the same power since they have the same current flowing through themd. Can’t tell from this infoCALCULATIONA 60 W bulb (240 Ohms) and a 75W (192 Ohms) bulb are in series connected to a 120 volt wall socket. Which bulb will be brighter?120 (given)T 240 192 432120 / 432 0.28totaltotalV VI A== W+ W= W= =260 602 275 7518.8192 15 Power to the 60!P I R WattP I R I x WattMore= == = =Two resistors R1=300 Ohms and R2=200 Ohms are in parallel connected to a 12 volt battery. Which resistor is using more power?a. R1b. R2c. They use the same power since they have the same current flowing throughthemd. Can’t tell from this info2Same Voltage (Parallel)Smaller R is Bigger Power!VPR=ABC DConsider the circuit diagram – when the circuit is completed (t=0) which graph represents the current that flows in the circuit as a function of time?Fromthereadingassignment!ABC DWhich graph shows the MAGNITUDE of the chargeon the RIGHT plate as a function of time from switch on?Last
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