MCQ
A capacitor is a perfect insulator for
- AAlternating currents
- ✓Direct currents
- CBoth $ac$ and $dc$
- DNone of these
✓
Answer
Correct option: B.
Direct currents
b
(b) ${X_C} = \frac{1}{{\omega C}} = \frac{1}{{2\pi \nu \,C}}$; For $dc$ $\nu = 0,\,\,\,\therefore \,\,{X_C} = \infty $
(b) ${X_C} = \frac{1}{{\omega C}} = \frac{1}{{2\pi \nu \,C}}$; For $dc$ $\nu = 0,\,\,\,\therefore \,\,{X_C} = \infty $
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