Test#3 Topic Summary.docx - PHY222 Test#3 Test Topics Summary Chapters 27-29 Chapter 27 Understand what emf(\u03b5 is compared to \u0394Vt Understand how to

Test#3 Topic Summary.docx - PHY222 Test#3 Test Topics...

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PHY222Test #3Chapters 27-29Test Topics SummaryChapter 27Understand what emf (ε) is compared to ΔVtUnderstand how to apply the Loop Rule (i.e., voltage out equals voltage used, more or less)How to calculate power supplied by the battery versus power dissipated at a resistorHow to calculate the equivalent resistance (Req) for resistors in series, in parallel or in a complex circuitOnce you’ve calculated Req, then calculate total current (It) and be able to back calculate the voltage drop (ΔV), current and power dissipated at any individual resistorFor complex resistor circuits with more than one battery, use Kirchoff’s Rules to solveoKirchoff’s Junction Rule: Current into a junction equals current out of the junctionoKirchoff’s Loop Rule: The sum of all the voltages around any closed loop equals zerooUse a matrix to solve for all currents at onceoThen you can back calculate to determine voltage drop and power at any resistorUnderstand the difference between how to use an ammeter and a voltmeter, and what that means forthe internal resistance of each meterKnow how to derive the equations for charge as a function of time q(t) and current as a function of time I(t) for an RC circuit where the capacitor is initially discharged Know how to derive the equations for charge as a function of time q(t) and current as a function of time I

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