Direct-Current Circuits10518.4(a) The current through this series combination is ()12 V2.0 A6.0 bcbcVIR∆===Ω(Therefore, the terminal potential difference of the power supply is )9.0 6.0 30 VeqVIR∆==Ω+Ω=(b) When connected in parallel, the potential difference across either resistor is the voltage setting of the power supply. Thus, 990.25 A9.0 2.3 VVIR=18.5(a) The equivalent resistance of the two parallel resistors is 1114.12 7.00 10.0 pR−=+=ΩΩ
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