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【多选题】
在如图所示的电路中,已知电源电压为12伏,电阻R 1 为12Ω、R 2 为6Ω、 R 3 为6 Ω,则A.
电路总的总电阻为10 Ω
B.
电流表A的示数为1.2A
C.
电压表V的示数7.2V
D.
电流表A 1 的示数为0.4A
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