The apparent power supplied to a motor is six kilovoltamps at 120 volts. What is the impedance of the motor?

Correct Answer: Option C — 2.40 ohms

Motor impedance is calculated using the relationship $Z = V^2 / S$, where V is voltage and S is apparent power. Squaring the 120-volt supply (14,400) and dividing by the apparent power of 6,000 VA (6 kVA) yields an impedance of 2.40 ohms.