Basic Physics II Evidences - DrJJ - UiTM

TOPIC LEARNING OUTCOMES REMARKS HOUR3.0 CAPACITOR ANDDIELECTRICSAt the end of this topic, the student will be able to: 33.1 Capacitance and energyof capacitorsa) Define capacitance and state the purpose of a capacitor.b) Explain, qualitatively and algebraically, the factors affectingthe capacitance of a parallel plate capacitor and the changesin the capacitance when the geometrical dimensions arechanged.c) Numerically determine the capacitance of parallel platecapacitors and the changes in the capacitance when thegeometrical dimensions are changed.d) Qualitatively, algebraically and numerically explain andobtain the changes in energy stored by a parallel-platecapacitor when the charging source and/or the geometricaldimensions are changed.‣ Capacitance as a measure thecharge on the capacitor per unitQvoltage, C =V‣ Air-filled capacitorε0A‣ C0= , C = ε r C od‣ Table of dielectric constant‣ Other types of capacitors are notdiscussed.21 2 1 1 Q‣ U = CV = QV =2 2 2 C13.2 Capacitors in series andparallel combination4.0 ELECTRIC CURRENT ANDDIRECT-CURRENTCIRCUITSa) Draw a schematic diagram for capacitors connected in seriesand capacitors connected in parallel.b) Obtain the mathematical formulation for effectivecapacitances for capacitors connected in series and connectedin parallel.c) Calculate the effective capacitances of capacitors in series,capacitors in parallel and capacitors in series-parallelcombination.‣ Limit to five capacitors.‣ Use the constant potentialdifference for a parallel circuitand constant current in seriescircuit to obtain effectivecapacitance.‣ Parallel: C = C1 + C2+ .. + C51 1 1 1‣ Series: = + + ... +d) Determine the voltage, the charge stored and the energystored on each capacitor in a series, in parallel and inconnected in series-parallel combination.At the end of this topic, the student will be able to: 10CC1C2C52Physics Lesson Outcomes-Electricity & Magnetismhttp://drjj.uitm.edu.my; HP:+60-19-355-1621Page 4 of 12Prepared by Assoc. Prof. Dr. Jaafar Jantan aka Dr. JJEmail: jjnita@salam.uitm.edu.my; drjjlanita@hotmail.com