图3.55所示的电路中,已知E=12V,Is=2A,R1=R2=R3=2欧,求流过R3的电流。图3.55所示的电路中,已知E=12V,Is=2A,R1=R2=R3=2欧,求流过R3的电流。
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I = Is/2 + E / (R1+R3) = 4A
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