The correct answer is: C. inductive reactance increases with operating frequency.
Inductive reactance is the opposition to the flow of alternating
current (AC) in a circuit. It is caused by the inductance of the circuit, which is the property of a conductor to store energy in a magnetic field. The inductive reactance of a circuit is proportional to the frequency of the AC current. This means that the higher the frequency, the greater the inductive reactance.Option A is incorrect because inductive reactance increases with frequency, not decreases.
Option B is incorrect because inductive reactance is not at
a maximum for DC source voltages. In fact, inductive reactance is zero for DC source voltages.Option D is incorrect because there is a meaningful relationship between inductive reactance and operating frequency.
Option E is incorrect because the correct answer is C.