A 0 . 07 H inductor and a 12 Ω resistor are connected in series to a 220 V , 50 Hz AC source. The approximate current in the circuit and the phase angle between current and source voltage are respecti

Question

A 0 . 07 H inductor and a 12 Ω resistor are connected in series to a 220 V , 50 Hz AC source. The approximate current in the circuit and the phase angle between current and source voltage are respectively. [Take π as 22 7

TestHub · Accepted Answer

ϕ = tan - 1 X L R X L = ω L X L = 2 × 22 7 × 50 × 0 . 07 = 22 Ω ϕ = tan - 1 22 12 R = 12 Ω ϕ = tan - 1 11 6 Z = X L 2 + R 2 = 25 . 059 I = V Z = 220 25 . 059 = 8 . 77 A

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