As shown in figure "A" of the illustration, what would be the circuit impedance if the capacitive reactance is 10 ohms and the resistance is 10 ohms? EL-0109

Correct Answer: Option C — 14.14 ohms

AC circuit impedance with resistance and capacitive reactance is calculated using the Pythagorean theorem ($Z = \sqrt{R^2 + X_c^2}$). Substituting 10 ohms for both yields the square root of 200, which equals 14.14 ohms, satisfying IEEE 45 impedance calculation requirements.