MCQ
In steady state the potential difference across the capacitor is $10\,\, V.$ Each resistance is of $3\,\Omega $. The cell is ideal. The $emf$ of the cell is .............. $\mathrm{V}$
- ✓$14$
- B$16$
- C$18$
- D$24$
✓
Answer
Correct option: A.
$14$
a
$\mathrm{I}=\frac{\mathrm{E}}{\mathrm{R}_{\mathrm{eq}}}$ ...........$(i)$
$\mathrm{I}=\frac{\mathrm{E}}{\mathrm{R}_{\mathrm{eq}}}$ ...........$(i)$
Given that, $\mathrm{R}=3\, \Omega$ and
$\mathrm{V}_{\mathrm{A}}-\mathrm{V}_{\mathrm{B}}=10 \mathrm{\,V}$ ......$(ii)$
From $(i)$ and $(ii)$
$\mathrm{E}=14 \mathrm{\,V}$
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