Which statement is correct regarding capacitive circuits?

In capacitive circuits, the statement that they can have a leading phase angle is accurate and reflects a key characteristic of how capacitors behave in alternating current (AC) systems. When a capacitor is connected to an AC power source, it causes the current to lead the voltage in phase. This happens because a capacitor charges and discharges in response to the alternating voltage, allowing current to flow even before the voltage reaches its peak.

This leading phase angle is particularly important in power factor correction, where capacitors are used to improve the efficiency of electrical systems. A leading phase angle means that the current reaches its maximum value before the voltage does, in contrast to inductive circuits, where the current lags behind the voltage.

The other statements are not accurate representations of capacitive circuits. While capacitors can consume reactive power, they don't consume real power; they can operate in AC circuits and are commonly used in such applications; and they do not only work with direct current, as their behavior is fundamentally different in AC systems.