engineering physics MCQ #300

In an LCR circuit, the resistance is 10 Ω, inductive reactance is 30 Ω, and capacitive reactance is 20 Ω. What is the impedance?

engineering physics MCQ #300

  1. Question 1

    Q1. In an LCR circuit, the resistance is 10 Ω, inductive reactance is 30 Ω, and capacitive reactance is 20 Ω. What is the impedance?

    • A) 10 Ω
    • B) 14.14 Ω
    • C) 20 Ω
    • D) 22.36 Ω

    Answer: 14.14 Ω

    Explanation: Z = √(R² + (XL - XC)²) = √(10² + (30 - 20)²) = √(100 + 100) = √200 = 14.14 Ω.