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Inductive reactance X_L = ?
AωL²
B1/(ωL)
CR/ωL
DωL = 2πfL
Answer & Solution
Correct answer: D. ωL = 2πfL
X_L = ωL = 2πfL. Increases with frequency. At DC (f=0): X_L = 0 (inductor acts as short). At very high f: large impedance (open). Used in filters: low-pass uses series L.
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