电感L=25.5mH与电阻R=6Ω串联，通过的电流i=6.5m(314t+π6)A， 求UR UL和U总

感抗Xl=2πfL=8Ω
串联后总阻抗Z=R+jXl=6+j8
阻抗模lZl=10Ω
i=220/10=22A
电阻电压ur=iR=132V
ul=iXl=176V
,希望你能看懂

电压有效值： U = 141/√2 = 100V

总阻抗模：Z^2 = 4^2 + (8 - 5)^2

Z = 5Ω

阻抗角：θ = arctg3/4 = 3687°

电流有效值：I = 100/5 = 20A

电流瞬时值：i = 20√2 sin(ωt - 3687°) A           ；题目已知电压是：u=141sinωt V

各元件电压有效值：

Ur = 4 20 = 80V

Ul = 8 20 = 160V

Uc = 5 20 = 100V

XL=2π f L=2×π×50×255×10^-3=255ΩUR=i×R=65m(314t+π/6)×6=39m(314t+π/6) VUL=i×XL=65m(314t+π/6)×255=16575m(314t+π/6) VU总=UR+UL=55575m(314t+π/6) V另外问一下,i=65m(314t+π/6)A

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