Physics
JAMB 2000
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
Explanation
Inductive reactance is given by
XL = WL = 2πfL
XL = 2 x π x (50/π) x 2
XL = 200Ω
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