MCQ
What will be the phase difference between virtual voltage and virtual current when current in the circuit is wattless?
- A$60^{\circ}$
- B$45^{\circ}$
- ✓$90^{\circ}$
- D$180^{\circ}$
✓
Answer
Correct option: C.
$90^{\circ}$
(c) : $P=E_{ rms \times} I_{ rms ,} \cos \phi$
As current is wattless, so $\cos \phi=0 ; \phi=90^{\circ}$
As current is wattless, so $\cos \phi=0 ; \phi=90^{\circ}$
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