In an AC circuit, resistance 50 Ω, inductance 0.3 H and capacitance 15 μF is connected to an AC voltage source 25 V, 50 Hz. Determine the current in the circuit.(a) 0.01 A(b) 0.2 A(c) 0.02 A(d) 0.002 AThe question was asked during an interview.The above asked question is from Kirchhoff’s Laws and Network Solution topic in chapter Network Theorems Applied to AC Networks of Basic Electrical Engineering

In an AC circuit, resistance 50 Ω, inductance 0.3 H and capacitance 1

1.	In an AC circuit, resistance 50 Ω, inductance 0.3 H and capacitance 15 μF is connected to an AC voltage source 25 V, 50 Hz. Determine the current in the circuit.(a) 0.01 A(b) 0.2 A(c) 0.02 A(d) 0.002 AThe question was asked during an interview.The above asked question is from Kirchhoff’s Laws and Network Solution topic in chapter Network Theorems Applied to AC Networks of Basic Electrical Engineering
Answer» The correct answer is (B) 0.2 A Explanation: Z^2 = R^2+(XL-XC)^2, XL=2πfL,XC=1/(2πfC)f=50Hz and L=0.3H and C=15 μF XL=2π(50)(0.3)= 94.25 OHM . XC=1/(2π5015*10^-6) =212.21 ohm. Z^2=50^2+(212.21-94.25)^2=15625 Z = 125 ohm. Current in the CIRCUIT i=V/Z=25/125=0.2 A.

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