问答题
R1和R2两个串联电阻,已知R1=3R2。已知总电压为8V,则R2两端电压为[填空(1)] ,R1和R2功率比为[填空(2)] 。
R1和R2两个串联电阻,已知R1=3R2。已知总电压为8V,则R2两端电压为[填空(1)] ,R1和R2功率比为[填空(2)] 。