An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?

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Enhance your understanding of the fundamentals of electricity with the AMT General Exam. Study with multiple-choice questions crafted to improve your knowledge and confidence. Prepare effectively for your success!

Multiple Choice

An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?

Explanation:
Inductive reactance increases with both inductance and frequency, because X_L = 2π f L. That means a stronger magnetizing effect (larger L) or faster current changes (higher f) push the circuit’s opposition up. Voltage doesn’t set X_L, and resistance affects overall impedance but not the inductive reactance itself. Capacitive reactance behaves differently with frequency (X_C = 1/(2π f C)) and would actually decrease as frequency rises, not increase. So increasing inductance and frequency is what raises the inductive reactance.

Inductive reactance increases with both inductance and frequency, because X_L = 2π f L. That means a stronger magnetizing effect (larger L) or faster current changes (higher f) push the circuit’s opposition up. Voltage doesn’t set X_L, and resistance affects overall impedance but not the inductive reactance itself. Capacitive reactance behaves differently with frequency (X_C = 1/(2π f C)) and would actually decrease as frequency rises, not increase. So increasing inductance and frequency is what raises the inductive reactance.

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