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Inductive reactance ______.

Asked in GSEB Board March 2023 · Reactance and frequency

• (1) limits A.C. current
• (2) limits D.C. voltage
• (3) limits D.C. current
• (4) stores the A.C. current

Step-by-step solution

Why the other options are wrong

• (2) Reactance opposes current, not voltage; and for d.c. (ω=0) the inductive reactance X_L=ω L is zero anyway.
• (3) For a steady d.c. current ω=0, so X_L=ω L=0: an ideal inductor offers no opposition to d.c. Only the resistance of its wire limits a d.c. current.
• (4) Reactance is an opposition to current, measured in ohms; it stores nothing. What an inductor stores is energy, in its magnetic field, not current.

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