JEE Main 2024 Physics question
A series LCR circuit with mH, F and R = 10 Ω, is connected across an ac source of 220 V, 50 Hz supply. The power factor of the circuit would be .
Answer: 1
Solution
= 2π(50)(100/π × 10⁻³) = 10 Ω and = 1/(2π × 50 × 10⁻³/π) = 10 Ω. Since = , Z = R = 10 Ω and the power factor = R/Z = 1.