MCQ
What will be the phase difference between virtual voltage and virtual current, when the current in the circuit is wattless
- A$90^{\circ}$
- B$45^{\circ}$
- ✓$180^{\circ}$
- D$60^{\circ}$
✓
Answer
Correct option: C.
$180^{\circ}$
$\tan \phi=\frac{\omega L}{R}=\frac{2 \pi \times 50 \times 0.21}{12}=5.5 \Rightarrow \phi=180^{\circ}$
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