engineering physics MCQ #71

In a series LCR circuit, the voltage across the resistor, capacitor, and inductor are 10 V, 20 V, and 15 V, respectively. The applied voltage is

engineering physics MCQ #71

  1. Question 1

    Q1. In a series LCR circuit, the voltage across the resistor, capacitor, and inductor are 10 V, 20 V, and 15 V, respectively. The applied voltage is

    • A) √(10² + (15 - 20)²)
    • B) 10 + 20 + 15
    • C) √(10² + 20² + 15²)
    • D) 10 + 15 - 20

    Answer: √(10² + (15 - 20)²)

    Explanation: V = √(V_R² + (V_L - V_C)²) = √(10² + (15 - 20)²).