11. 如圖所示,電源內阻R為多少?所消耗功率又為多少? (A) 1.526歐姆,2.62瓦 (B) 1.526歐姆,0.171瓦 (C) 3.42歐姆,1.526瓦 (D) 2.62歐姆,3.42瓦
38V,29Ω電流 38/29=1.31A
VL=38, VS=40, RL=29
VL=RL / (RS+RL), RS=1.526Ω
P=I2R = (1.31)2x1.526=2.618W.
I = V / R38/29=1.31A40V-38V=2VR=V/I串聯電流相等2V/1.31A=1.526RP=IV=I^2R1.31A*1.31A*1.526R=2.62W
11. 如圖所示,電源內阻R為多少?所消耗功率又為多少? (A) 1.526歐..-阿摩線上測驗