engineering physics MCQ #213

engineering physics MCQ #213

1. Question 1

   Q1. A coil has resistance 10 Ω and inductive reactance 10√3 Ω. Find impedance.

   • A) 10 Ω
   • B) 20 Ω
   • C) 10√3 Ω
   • D) 20√3 Ω

   Answer: 20 Ω

   Explanation: Use Z = √(R² + Xl²), where R = 10 Ω and Xl = 10√3 Ω. So, Z = √(100 + 300) = √400 = 20 Ω.