Which variables determine inductive reactance?

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Multiple Choice

Which variables determine inductive reactance?

Explanation:
Inductive reactance is the opposition an inductor offers to alternating current due to the changing magnetic field in the coil. It depends on two things: the inductance value and how fast the current is changing, which is the frequency of the AC. The relationship is X_L = 2π f L, so doubling either the frequency or the inductance doubles the reactance. That’s why the correct choice is frequency and inductance. Capacitance governs capacitive reactance, not inductive. The voltage across the inductor is related to how large the reactance is (V_L = I × X_L) but doesn’t determine X_L itself. Resistance is separate from reactance and represents the real, not reactive, opposition in the circuit.

Inductive reactance is the opposition an inductor offers to alternating current due to the changing magnetic field in the coil. It depends on two things: the inductance value and how fast the current is changing, which is the frequency of the AC. The relationship is X_L = 2π f L, so doubling either the frequency or the inductance doubles the reactance.

That’s why the correct choice is frequency and inductance. Capacitance governs capacitive reactance, not inductive. The voltage across the inductor is related to how large the reactance is (V_L = I × X_L) but doesn’t determine X_L itself. Resistance is separate from reactance and represents the real, not reactive, opposition in the circuit.

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