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

A. 200 Ω
B. 50 Ω
C. 100/π Ω
D. 25/π Ω

Correct Answer:

Option A = 200 Ω

Explanation

Inductive reactance is given by
XL = WL = 2πfL
XL = 2 x π x (50/π) x 2
XL = 200Ω