1.e=4.44fwBmS√2cos2πft=4.44×300/60×100×1/π×0.5×√2cos(2π×300/60×t)=500cos10πt V
2.500cos10πt=500cos10π1/30=500cosπ/3=500×0.5=250V
3.E=500/√2=353.6V I=E/(1+9)=353.6/10=35.36A
或1.Em=2BmSlvw=2BmSπn/60×w=2×1/π×0.5×π×300/60×100=500V e=500cos10πt V
上述:e:瞬时值.E、I:有效值.Em:极大值或峰值、振幅值.