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electric circiut

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http://i983.photobucket.com/albums/ae311/zachariah_thomas/9f31acef.jpg In the question,Given that the total resistance=35Ω,至於其他既資料已在題目附近。請計算所有的unknown. plz help the above Qs,thz!!!

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Since the total resistance is 35 ohms, hence main current = 8/35 A = 0.2286 A Hence, I1 = I5 = 0.2286 A Resistance R5 = 3.715/I5 = 3.715/0.2286 ohms = 16.25 ohms V1 = I1 x 15 = 0.2286 x 15 v = 3.429 v Voltage across the three parallel resistors = (8 - 3.715 - 3.429) v = 0.856 v Thus, V2 = V3 = V4 = 0.856 v Hence, I2 = 0.856/13 A = 0.0658 A I3 = 0.856/20 A = 0.0438 A I4 = 0.856/7 A = 0.1223 A

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