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Unformatted text preview: Energy Try it! Example: Calculate current through each resistor. R 1 = 10 , R 2 = 20 , R 3 = 30 , V b =44 V Complex circuits For HW: very tricky when finding the power or current for a given resistor R 1 R 2 R 3 V b 18.5 RC Circuits • C circuits – Charging is done "instantly"; q = CV – Not good; can ruin the battery – Add some resistance to slow it down • RC Circuits Example: (a) How long does it take the charge on the capacitor to drop to onefourth of its original value (in multiples of )? (b) If V= 12V, R = 2 and C = 3.5 F, find the initial charge on the capacitor and the time it takes to discharge? 3 18.6 Household circuits and 18.7 electrical safety...
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This note was uploaded on 03/30/2009 for the course PHY 102 taught by Professor Luo during the Spring '08 term at SUNY Buffalo.
 Spring '08
 LUO
 Physics, Current

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