Question
Download Solution PDFTo an AC power supply of 220 V at 50 Hz, a resistor of 20 Ω, a capacitor of reactance 25 Ω and an inductor of reactance 45 Ω are connected in series. The corresponding current in the circuit and the phase angle between the current and the voltage is, respectively:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCorrect option is: (2) 7.8 A and 45°
XL = 45 W, XC = 25 W, R = 20 W
⇒ I = 220 / √((XL − XC)2 + R2) = 220 / √((45 − 25)2 + 202)
⇒ = 220 / (2√2) = 11 / √2 = 7.779 A
⇒ tan φ = (XL − XC) / R = (45 − 25) / 20 = 1
⇒ φ = 45°
Last updated on Jun 16, 2025
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