A storage cell is charged by 5 amp D.C. for 18 hours. Its strengt… - Vidyadip

MCQ

A storage cell is charged by 5 amp D.C. for 18 hours. Its strength after charging will be

A
$18 \mathrm{AH}$
B
$5 \mathrm{AH}$
C
$90 \mathrm{AH}$
✓
$15 \mathrm{AH}$

✓

Answer

Correct option: D.

$15 \mathrm{AH}$

(d) $6 \Omega$ and $6 \Omega$ are in series, so effective resistance is $12 \Omega$ which is in parallel with $3 \Omega$, so$\begin{aligned}& \frac{1}{R}=\frac{1}{3}+\frac{1}{12}=\frac{15}{36} \Rightarrow R=\frac{36}{15} \\& \therefore I=\frac{V}{R}=\frac{4.8 \times 15}{36}=2 \mathrm{~A}\end{aligned}$

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