Question

In an AC circuit containing a pure resistor, the phase difference between voltage and current is

• A. \(90^\circ\)
• B. \(180^\circ\)
• C. \(45^\circ\)
• D. \(0^\circ\)

Hint:

Phase differences in AC circuits: \[ \boxed{\text{Resistor } \rightarrow 0^\circ} \] \[ \boxed{\text{Inductor } \rightarrow 90^\circ} \] \[ \boxed{\text{Capacitor } \rightarrow 90^\circ} \] Remember: \[ \boxed{\text{V and I are in phase in a pure resistor}} \]

Answer 1

The Correct Option is D

Step 1: Recall the AC behavior of a resistor. For a pure resistor: \[ V=IR \] At every instant, voltage and current vary together.

Step 2: Determine the phase relation. The current reaches its maximum value at the same instant as the voltage. Hence, \[ \phi=0^\circ \]

Step 3: Choose the correct option. \[ \boxed{\phi=0^\circ} \] Therefore, \[ \boxed{\text{(D)}} \] is the correct answer.