Electricity & Magnetism
Inductive Reactance
Opposition to AC current flow by an inductor.
Variables
X_LΩ
Inductive reactance
Opposition to AC by inductor
ωrad/s
Angular frequency
ω = 2πf
LH
Inductance
Inductance
Derivation
From V = L(dI/dt) for I = I₀sin(ωt), X_L = V₀/I₀ = ωL.
Your notes
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Common questions
What is the Inductive Reactance formula?
Inductive Reactance is written Xₗ = ωL. Opposition to AC current flow by an inductor. It belongs to Electricity & Magnetism, under AC Circuits.
What are the units in Xₗ = ωL?
In SI units, X_L is inductive reactance, measured in kg·m²/(A²·s³); ω is angular frequency, measured in s⁻¹; L is inductance, measured in kg·m²/(A²·s²).
How is the Inductive Reactance formula derived?
From V = L(dI/dt) for I = I₀sin(ωt), X_L = V₀/I₀ = ωL. The result is Xₗ = ωL.