Question

The phasor diagram of current and voltage for an AC circuit is shown in the figure. The components of the circuit will be -

• A. only resistor
• B. only inductor
• C. only capacitor
• D. both resistor and inductor

Answer 1

The correct option is D both resistor and inductor

In a pure resistive AC circuit, current and voltage remain in the same phase, while in a pure inductive and a pure capacitive AC circuit, there is a phase difference of ${90}^{\circ }$ between current and voltage.

But in RL AC circuit, voltage lead the current by some phase $\varphi$, here, $\varphi ={45}^{\circ }$.

Therefore, the AC circuit have resistor and inductor.

Hence, option $\left(D\right)$ is the correct answer.