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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 inductive reactance in the circuit.

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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 inductive reactance in the circuit.

(a) 36 ohm

(b) 95 ohm

(c) 125 ohm

(d) 140 ohm

I got this question in an online interview.

My question comes from Kirchhoff’s Laws and Network Solution topic in division Network Theorems Applied to AC Networks of Basic Electrical Engineering

1 Answer

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Right option is (b) 95 ohm

Easy explanation: XL=2πfL    f=50Hz and L=0.3H

XL=2π(50)(0.3) = 94.25 ohm.

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