136 Direct Current CircuitsP28.11(a)Since all the current in the circuit must pass through the series100 Ωresistor, P=IR2maxmax=RI2soIRmax..===25 00500W100 AΩRVRIeqeq=++FHGIKJ=−1001100110015075 01VΩΩΩ∆maxmax.(b)=IV∆750375...A VWafaftotal powerPP1232225 01000 2506 25==.WWRIΩafFIG. P28.11P28.12Using 2.00-Ω, 3.00-Ω, 4.00-Ωresistors, there are 7 series, 4 parallel, and 6 mixed combinations:Series2.00 Ω6.00 Ω3.00 Ω7.00 Ω4.00 Ω9.00 Ω5.00 ΩParallelMixed0.923 Ω1.56 Ω1.20 Ω2.00 Ω1.33 Ω2.22 Ω1.71 Ω3.71 Ω4.33 Ω5.20 ΩThe resistors may be arranged in patterns:P28.13The potential difference is the same across either combination.∆VIR IR+3111500chsoRR5003+FHGIKJ=15003+=RandR1000100kFIG. P28.13*P28.14When S is open, R1, R2, R3are in series with the battery. Thus:
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .