The rms current in an RL circuit is 0.21 A when it is connected to an ac generator with a frequency of 50 Hz and an rms voltage of 30 V .
(a) Z = Vrms / Irms
Z = 30 / 0.21
Z = 143 Ω
Z = √(R2 + ω2L2)
143 = √(R^2 + (2π * 50)^2*(0.170)^2)
R = 133 Ω
(b) Vrms,R = IrmsR
Vrms = (0.21) (132.65)
Vrms = 27.85 V = 28 V (rounded off)
(c) Vrms,L = IrmsωL
Vrms = (0.21)(2π * 50)(0.170)
Vrms = 11.21 V
The rms current in an RL circuit is 0.21 A when it is connected to an...
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