What condition is expected when a circuit has equal portions of impedance from both inductive and capacitive reactance?

When a circuit exhibits equal portions of impedance from both inductive and capacitive reactance, it is often referred to as a resonant condition. In this scenario, the inductive reactance (which opposes changes in current) and the capacitive reactance (which opposes changes in voltage) effectively cancel each other out. As a result, the overall reactance of the circuit approaches zero.

When the total impedance is minimized, it leads to a situation where the current and voltage are perfectly aligned, meaning they are in phase with each other. This in-phase relationship indicates a high power factor, which is a measure of how effectively electrical power is being converted into useful work output.

In summary, a circuit with equal portions of impedance from both inductive and capacitive reactance is characterized by having the current and voltage in phase, which signifies a high power factor. This is why the correct choice emphasizes that the current is in phase with the voltage.