An AC circuit has a capacitive reactance of 30 ohms in addition to an inductive reactance of 40 ohms connected in series. What is the total reactance of the circuit?

Correct Answer: Option B — 10.00 ohms

Total reactance in a series AC circuit containing both inductive and capacitive elements is the absolute difference between them ($X = |X_L - X_C|$). Subtracting 30 ohms of capacitive reactance from 40 ohms of inductive reactance yields a net total reactance of 10.00 ohms.