问题
单项选择题
由R1=12Ω，R2=4Ω，R3=6Ω，R4=2Ω组成的并联电路中，电源电压为12V，则流过电阻R3的电流I3是多少？（）
A.6A
B.3A
C.2A
D.1A
答案
参考答案：C
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由R1=12Ω，R2=4Ω，R3=6Ω，R4=2Ω组成的并联电路中，电源电压为12V，则流过电阻R3的电流I3是多少？（）
A.6A
B.3A
C.2A
D.1A
参考答案：C
| 完形填空。 | |||
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