JAMB Physics 2000 Question 36

Question 36

Alternating Current Circuits

A 2 H inductor has negligible resistance and is connected to a 50/π Hz a.c supply. The reactance of the inductor is

  1. A.200 Ω
  2. B.50 Ω
  3. C.100/π Ω
  4. D.25/π Ω
Show the answer and explanation

Answer: A (200 Ω)

Explanation

XL = 2πfL = 2π × (50/π) × 2 = 200 Ω.