Question

For an AC circuit containing only a pure resistor, the phase angle between the voltage phasor and the current phasor is ______.

Options

• 90°

• 180°

• 45°

• 0°

Answer 1

For an AC circuit containing only a pure resistor, the phase angle between the voltage phasor and the current phasor is 0°.

Explanation:

In a pure resistor, the voltage and current are always in phase. Their phasors V and I point in the same direction at all times, meaning the phase angle between them is zero. This confirms that both reach peak, zero, and minimum values simultaneously.