Question

An ac source of voltage V = $V_{m}sin\omega t$ is connected across the resistance R as shown in figure. The phase relation between current and voltage for this circuit is

• A. both are in phase
• B. both are out of phase by ${90}^0$
• C. both are out of phase by ${120}^0$
• D. both are out of phase by ${180}^0$

Answer 1

The correct option is A both are in phase

In a purely resistive circuit, the voltage and current in the circuit are in the same phase. Therefore, the resistor does not result in any phase difference between current and voltage.

Option $\left(A\right)$ is correct.