engineering physics MCQ #84

engineering physics MCQ #84

1. Question 1

   Q1. The impedance of an LCR circuit is

   • A) R + j(X_L - X_C)
   • B) √(R² + (X_L - X_C)²)
   • C) R + j(X_C - X_L)
   • D) √(R² + (X_C - X_L)²)

   Answer: √(R² + (X_L - X_C)²)

   Explanation: Impedance Z = √(R² + (X_L - X_C)²), where X_L = ωL and X_C = 1 / ωC.