At what frequency would a 10H inductor have a reactance of 2000Ω?
A
π/200Hz
B
π/100Hz
C
100/πHz
D
100πHz
Verified Correct Answer: C.
Physical Principles & Numerical Solution
Inductive reactance XL = 2πfL
∴ 2πfL = 2000Ω
then f = 2000Ω/2 x π x 10
f = 100/πHz
Source: Myschool Past Questions Archive (Record #626)